Best Aerospace & Defense M&A Advisors and Investment Banks (2026)

Best Aerospace & Defense M&A Advisors and Investment Banks (2026)

Last updated: October 2026 · Every credit dated October 2025 or later unless labelled

Short answer. The aerospace and defense M&A bench in 2026 is four lanes, not one list. KippsDeSanto & Co. holds the most dated sell-side credits we could find, ten between December 2025 and October 2026, and Robert W. Baird holds eight sell-side credits, all of them exclusive, with disclosed prices from $375 million to $876 million, so those two lead on defense tech and GovCon services. Lincoln International, Harris Williams and Houlihan Lokey lead commercial aerospace suppliers, MRO and the PE roll-ups of defense suppliers; KAL Capital Markets and The McLean Group are the specialists for smaller sales. Six federal gates, from CMMC status to SBA recertification, decide whether the deal closes on time, and two of them fire before anyone signs.

Key takeaways

• Built from 65 dated adviser credits across 47 deals, read in press releases, filings and the advisers' own dated tombstones, not on reputation. Only firms registered with FINRA as broker-dealers, or a bank's investment banking arm, are called investment banks.
• KippsDeSanto (10 credits) and Baird (8) dominate GovCon and defense tech; Lincoln (7), Harris Williams (4) and Houlihan Lokey (4) dominate aerospace suppliers and MRO.
• The Deal-Gate Ladder: CMMC status, the DCSA FOCI notice, the ITAR 60-day notice, the CFIUS 30-day declaration, novation and SBA recertification, in the order they bite. CMMC Phase 2 starts November 10, 2026.
• The SBA recertification rule moved. It sits in 13 CFR 125.12 now, and since January 17, 2026 a sale to a large buyer can cost options on small-business multiple-award contracts.
• Two rooms, not one. Commercial diligence fits a standard deal room; ITAR, CUI and CMMC-scoped material needs a controlled environment.

Why does an aerospace or defense sale need its own adviser bench?

Because the price of an A&D business is set by things a generalist process does not read: program positions and qualified-supplier status, contract vehicles and set-aside eligibility, a facility clearance, export-controlled technical data and the federal gates that follow all of them. I'm Deqian Jia, co-founder of Peony, a data room company used by 8,000+ customers in 60+ countries. We are not an adviser and do not place deals; we build the room these processes run in, which means I see where they stall, and in A&D they stall on gates, not on bids.

This guide is for one owner in four situations: an AS9100 supplier or FAA Part 145 MRO shop with $10 million to $150 million of revenue; a defense supplier being courted by a PE roll-up; a venture-backed defense-tech company with a prime or a foreign strategic at the door; and a GovCon services firm holding set-aside contracts and cleared staff. An aerospace and defense M&A advisor is an investment bank or boutique that runs the sale, recapitalisation or carve-out of a business that sells to aircraft makers, airlines, the Pentagon or the intelligence community, and sequences the export-control, foreign-investment, security-clearance and contracting approvals that come with it. Label distinctions are in M&A advisor vs broker vs investment bank. The generalist industrials bench, with its own short A&D section, is in our industrial M&A advisors guide; this page is the dedicated A&D one.

How we ranked. Dated adviser-of-record evidence first: a deal party's release or SEC filing outranks the adviser's own dated tombstone, which outranks an undated one, which outranks marketing copy. Credits from October 2025 onward count; anything older is labelled with its year. Sell-side mandates at the size most owners sell at outrank a single bulge-bracket credit above $1 billion.

Which advisers closed aerospace and defense deals between October 2025 and October 2026?

A small, repeating set: KippsDeSanto and Baird on defense tech and GovCon, Lincoln and Harris Williams on aerospace suppliers, and the large banks on anything above $1 billion. The Adviser-of-Record Ledger below lists the A&D deals in our window where we could read the adviser's role in a primary or near-primary source, newest first. It is a working sample, not a census: several advisers' own sites list more. A dash means no adviser was named for that side in the source we read.

Bottom line: 47 deals, 52 sell-side mandates once co-advisers are counted, and two firms hold 18 of them. KippsDeSanto's ten are almost all undisclosed-value sales of founder- and sponsor-owned companies; Baird's eight carry disclosed prices between $375 million and $876 million where a price was published. Every deal above $2.5 billion was sold by large banks, and Harris Williams's $2.2 billion Jet Parts Engineering and Victor Sierra sale is the largest sell-side credit held by a middle-market specialist.

Three reading rules. Undisclosed value is the norm in this ledger below about $250 million, so a firm's credits in this band look smaller on paper than they are. "A sell-side adviser" is not "the exclusive adviser": Lincoln on Prince & Izant says so in its own wording, and Unical's sale carries three sell-side names, Jefferies and Fifth Third Securities in Platinum Equity's release and Houlihan Lokey on its own tombstone. And the same platform buys repeatedly: TJC's Acron Technologies bought Sightline (Harris Williams) and Alereon (KippsDeSanto) in April 2026; Veritas bought MetroStar (KippsDeSanto) and then Steampunk to merge into it (Baird).

Who are the 16 best aerospace and defense M&A advisors in 2026, ranked?

KippsDeSanto, Baird, Lincoln International, Harris Williams and Houlihan Lokey, in that order, then the boutiques and the large banks. Within the bench, sell-side credits at owner-seller size outrank buy-side work and outrank credits above $1 billion. Positions 8 to 11 are large-cap banks ranked mostly on credits above $500 million: below roughly $300 million of enterprise value they are usually the bank across the table, not your hire. Positions 12 to 16 rest on one dated credit each and say so.

1. KippsDeSanto & Co.: the deepest dated A&D sell-side record

KippsDeSanto & Co., Tysons, Virginia, has been owned by Capital One since 2019 and is registered with FINRA as KippsDeSanto & Company (CRD 45763). Its ten dated credits in our window cover all three defense lanes: MetroStar Systems to Veritas Capital (December 12, 2025), Ask Sage to BigBear.ai for $250 million (February 19, 2026), Sev1Tech to ERT, ARCTOS to DCS and Orbion to York Space Systems (March 2026), Alereon to TJC's Acron Technologies (April 20, 2026), Zone 5 Technologies to Kongsberg (June 10, 2026), FTS International to Noblis (August 28, 2026), Intelligent Waves to Bart & Associates (September 2026) and Action Manufacturing, a fuze and energetics maker, to Ignium (October 2, 2026), where it was "the exclusive Sell-Side Financial Advisor" (KippsDeSanto). Its Q3 2026 MarketView, dated October 9, 2026, says the firm "has announced 275+ total transactions, including 165+ since joining Capital One in 2019 and 24 in 2026". Two cautions: tombstone dates can be closing rather than announcement dates, and the firm does not advise on commercial aerospace with the same density. Verdict: the first call for a GovCon or defense-tech owner below about $500 million.

2. Robert W. Baird & Co.: the defense-tech sell-side with disclosed prices

Baird, Milwaukee, is employee-owned and registered as Robert W. Baird & Co. (CRD 8158); its Defense, Space & Government page names managing director Jonathan Kirkland as the team contact. Every one of its eight credits in our window is a sell-side mandate, and all eight are stated as exclusive in the deal release or Baird's own deal card: SciTec to Firefly for about $855 million (SciTec release, October 5, 2025); Altamira to Parsons for up to $375 million, where Parsons said the $330 million base price implies "a 12.8x multiple on the anticipated Altamira 2026 EBITDA contribution" (Parsons release, January 15, 2026); Blue Canyon Technologies, carved out of RTX, to MDA Space for $620 million; Ultra I&C Mission Solutions to Booz Allen for $720 million; DZYNE to Ondas for $875.8 million (Baird deal card); Steampunk to Veritas; Resonant Sciences to Joby for about $500 million; and TSC to Blackstone, forming Falcata. Watch the role: Baird was also a bookrunner on 2026 A&D IPOs, which is capital-markets work, not M&A advice. Verdict: the bank with the most disclosed-value defense-tech exits; ask how it staffs a deal under $100 million.

3. Lincoln International: the aerospace-supplier and roll-up specialist

Lincoln International, Chicago (CRD 42045), hired Ryan O'Toole and Eric Cartier as co-heads of aerospace and defense in July 2025, and the record since shows it. It was exclusive adviser to Applied Aerospace on its merger with Greenbriar's PCX Aerosystems (announced December 3, 2025), advised Syntony GNSS on its sale to Safran (February 2026), was exclusive adviser to Juniper on the sale of Precision Aerospace Holdings to Centerbridge's Precinmac (April 14, 2026), sell-side to Wynnchurch on Premier Forge Group to H.I.G. (closed June 29, 2026), "a sell-side advisor" on Prince & Izant to TransDigm for about $1.066 billion (closed September 28, 2026), exclusive buy-side adviser to ATL Partners on Precise Metal Products (announced October 2026) and "the exclusive financial advisor to Tri-Mack" on its sale to Trelleborg (Lincoln, October 21, 2026). Verdict: the strongest dated record for a precision-machining, forging or composites supplier.

4. Harris Williams: the aftermarket and defense-component exits

Harris Williams, Richmond, owned by PNC since 2005 and registered under its own name (CRD 113930), was financial adviser to Victor Sierra Aviation Holdings, Jet Parts Engineering and Vance Street Management on their $2.2 billion sale to TransDigm (signed January 16, closed April 7, 2026, per TransDigm's completion notice). Its dated defense tombstones in our window are Consolidated Boring to Greenbriar's Applied Aerospace & Defense (March 2, 2026), Sightline Intelligence to TJC's Acron Technologies (April 28, 2026) and Sentech, a sensor maker, to KKR's Spectris (October 1, 2026). Verdict: the sponsor-exit bank for aftermarket parts and defense electronics, usually above $100 million.

5. Houlihan Lokey: aerospace suppliers, carve-outs and cross-border exits

Houlihan Lokey (Houlihan Lokey Capital, CRD 17708) says its Aerospace, Defense & Government practice "has closed 90+ transactions worth more than $17 billion in enterprise value" since 2020. The credit in our window that deal coverage confirms is the sale of Precise Metal Products, for Staple Street Capital, to ATL Partners (announced October 2026). Three more rest on its own tombstones, so we label them: Survitec's carve-out of Beaufort to Capitol Meridian and Stellex (completion announced January 6, 2026), UCELIA to France's NEXTEAM (February 2026) and Unical Aviation to Airbus's Satair (closed May 11, 2026), where Platinum Equity's release names Jefferies and Fifth Third Securities as Unical's financial advisers. Its site lists aerospace and defense managing directors Eric Cho, Géraud Estrangin and Daniel Small. Verdict: strong where the buyer is foreign or the asset is a carve-out; check which office runs your deal.

6. KAL Capital Markets: the A&D-only lower-middle-market boutique

KAL Capital Markets, Long Beach, California, is a FINRA broker-dealer under its own name (CRD 291333) that works only in aerospace and defense. Its four credits in our ledger are small supplier deals on both sides: buy-side to Behrman Capital on Metallizing Service Co. (May 6, 2026), adviser to Adaptive Dynamics on its sale to DTC (May 26, 2026), "lead financial advisor" on Kittyhawk's sale to Machine Sciences (closed July 16, 2026) and adviser to ISC, a Cogenuity company, on Aero Electronics (August 2026). Its own site lists three more sell-side closes from late 2025: Five Axis Industries to Karman, Foresight Finishing to Valence Surface Technologies and Estes Energetics to Voyager. Verdict: the fit for a founder-owned machine shop or special-process house that a larger bank would staff thin.

7. The McLean Group: smaller GovCon services sales

The McLean Group, McLean, Virginia, trades securities through McLean Securities (CRD 104117). It was "the exclusive financial advisor to Highlight Technologies" on its sale to KKR's Empower AI (July 2026) and adviser to TENICA Global Solutions on a majority investment by McNally Capital (August 2026); our DC and Northern Virginia guide records three more 2026 corridor credits. Verdict: the call for a cleared services firm under about $100 million that wants senior bankers on every buyer call.

8. J.P. Morgan: co-sell-side on the two largest services and aftermarket exits

J.P. Morgan (J.P. Morgan Securities, CRD 79) was co-sell-side adviser to GenNx360 and Precision Aviation Group on the roughly $2.0 billion sale to VSE (closed May 5, 2026) and, with Evercore, to ARKA on its $2.6 billion sale to CACI (announced December 22, 2025). Verdict: relevant above $1 billion; below that it is the bank across the table.

9. Jefferies: defense tech and aftermarket, both sides

Jefferies (Jefferies LLC, CRD 2347) was co-sell-side on Precision Aviation Group, exclusive adviser to Booz Allen on the $720 million Ultra I&C purchase (June 22, 2026), and adviser to REDLattice on its pending de-SPAC with Bold Eagle at a $1.25 billion pre-money enterprise value (September 2026). Calcalist reports Jefferies and Goldman Sachs advised D-Fend Solutions on its $1.5 billion sale to Motorola Solutions. Verdict: the large bank most active in defense tech; ask which side it usually sits on.

10. Evercore: the largest aerospace-component mandates

Evercore (Evercore Group, CRD 42405) co-advised ARKA on its sale to CACI, co-advised KKR and CIRCOR on the $2.55 billion sale of CIRCOR Aerospace to Parker (May 21, 2026) and, with PJT, is lead adviser to GE Aerospace on its $11.75 billion purchase of CPP (September 8, 2026). Verdict: above $1 billion only.

11. Goldman Sachs: buy-side for the platforms

Goldman Sachs (Goldman Sachs & Co., CRD 361) was Firefly's exclusive adviser on SciTec, Blackstone's exclusive adviser on TSC and the Falcata launch (October 2026), and co-sell-side on CIRCOR Aerospace. Verdict: the bank your acquirer hires.

12. William Blair: aerospace distribution

William Blair (CRD 1252) "acted as financial advisor to FDH Aero" on its pending sale to Bain Capital, signed June 3, 2026. Verdict: one dated aerospace sell-side credit in our window, at sponsor-exit scale.

13. Piper Sandler: one large GovCon sell-side

Piper Sandler (Piper Sandler & Co., CRD 665) "served as financial advisor" to Agile Defense on its $660 million cash sale to Maximus, announced October 19, 2026. Verdict: one dated GovCon credit, and a large one.

14. Brown Gibbons Lang: business-aviation MRO

Brown Gibbons Lang (Brown, Gibbons, Lang & Company Securities, CRD 29540) advised Velocity Maintenance Solutions, a business-aviation MRO provider in New Castle, Delaware, on its sale to Bombardier (February 2026); its aerospace, defense and government services page lists managing director Meghan M. Welch. Verdict: one dated MRO credit; ask for more.

15. Citizens Capital Markets & Advisory: buy-side in defense tech

Citizens (Citizens JMP Securities, CRD 22208) "served as the exclusive financial advisor to Ondas" on its $875.8 million acquisition of DZYNE (Citizens, July 2026). Verdict: a buy-side credit; useful if you are the acquirer.

16. Capstone Partners: distressed aerospace sales

Capstone Partners, Boston, owned by Huntington and registered as Capstone Partners (CRD 132185), advised CTL Aerospace on its Chapter 11 sale to Davidson Kempner (March 2026), and TM Capital's website now redirects to a Capstone page announcing that TM Capital is part of Capstone. Capstone's September 2026 sector report puts 2025 A&D valuations at 3.0x EV/revenue and 11.4x EV/EBITDA. Verdict: the call when the sale runs through a bankruptcy court.

Who sells commercial aerospace suppliers and MRO shops?

Harris Williams, J.P. Morgan with Jefferies, Lincoln International, Houlihan Lokey, Brown Gibbons Lang, William Blair and KAL Capital Markets hold the dated 2026 credits. Harris Williams sold Jet Parts Engineering and Victor Sierra to TransDigm for $2.2 billion (closed April 7, 2026); J.P. Morgan and Jefferies sold Precision Aviation Group to VSE for about $2.0 billion (closed May 5, 2026); Lincoln sold Precision Aerospace Holdings and Prince & Izant and is selling Tri-Mack to Trelleborg; Houlihan Lokey's own tombstone claims Unical Aviation's sale to Airbus's Satair, where Platinum Equity's release names Jefferies and Fifth Third Securities; BGL advised Velocity Maintenance Solutions on its sale to Bombardier; William Blair advised FDH Aero on its sale to Bain Capital.

The buyers are the reason the specialist matters. TransDigm bought twice in our window, VSE once, Airbus's Satair once, and the large-cap end set the tone: GE Aerospace agreed to pay $11.75 billion for CPP, a castings maker, which KippsDeSanto's Q3 2026 MarketView puts at 18.0x EBITDA including expected synergies. That same report counted 26 aerospace transactions in Q3 2026, down 39% from a record second quarter, with activity "focused on aircraft maintenance and aftermarket services, specialized components and precision manufacturing." An AS9100 shop with a sole-source position on a long-running program is a different asset from a build-to-print job shop, and the adviser who knows which buyers pay for that difference is the one with the closes above.

Who runs defense-prime supplier roll-ups and carve-outs?

Lincoln International, Harris Williams, KippsDeSanto, Houlihan Lokey and Baird hold the dated credits on the 2026 roll-ups and carve-outs. Greenbriar's Applied Aerospace & Defense was built with Lincoln advising Applied on its PCX Aerosystems merger (December 2025) and Harris Williams selling Consolidated Boring into it (March 2026). TJC's Acron Technologies bought Sightline Intelligence (Harris Williams, April 28) and Alereon (KippsDeSanto, April 20). ATL Partners launched Precise Aerospace & Defense by buying Precise Metal Products, with Houlihan Lokey selling and Lincoln buying (October 2026). Blackstone formed Falcata from TSC (Baird sell-side) and ASEI in October 2026.

Carve-outs out of primes and their owners are the other half. Baird was exclusive adviser to RTX and Blue Canyon Technologies on the $620 million sale to MDA Space; Advent agreed to sell two Ultra units in 2026, Ultra I&C to Booz Allen for $720 million with Baird selling, and Ultra Maritime to Lockheed Martin at a $3.45 billion enterprise value, which KippsDeSanto's MarketView puts at about 22.0x estimated EBITDA. A roll-up buyer pays for qualified-supplier status and program content; a carve-out seller has to stand up transition services and re-paper customer contracts, which is where a defense-literate adviser earns the fee.

Who advises defense-tech and dual-use companies on a sale?

Baird first, then KippsDeSanto, Jefferies and Goldman Sachs. Baird sold SciTec to Firefly ($855 million, October 2025), DZYNE to Ondas ($875.8 million), Resonant Sciences to Joby (about $500 million) and Blue Canyon to MDA Space ($620 million); KippsDeSanto sold Ask Sage to BigBear.ai ($250 million), Zone 5 Technologies to Kongsberg and Orbion Space Technology to York Space Systems; Jefferies advised REDLattice on a $1.25 billion de-SPAC and, per Calcalist, D-Fend Solutions on its $1.5 billion sale to Motorola Solutions.

The market reads hot and narrow. DC Advisory's mid-market monitor, reported by Washington Technology on October 19, 2026, calls defense technology and products "white hot" and says activity has been "dominated by businesses with differentiated offerings, classified access and established programs of record." KippsDeSanto counted 31 defense deals in Q3 2026, with activity centered on autonomous systems and counter-UAS. Two things decide the price of a venture-backed seller: whether the product is on a program of record or still on prototype money, and whether the buyer set includes a foreign strategic, which brings the ITAR and CFIUS rungs below into the timetable. Our deep-tech investors guide covers the capital side.

Who are the best GovCon services M&A advisors?

KippsDeSanto, Baird, The McLean Group and Piper Sandler, with J.P. Morgan and Evercore above $1 billion. KippsDeSanto sold MetroStar to Veritas (December 2025), Sev1Tech to ERT (March 2026), ARCTOS to DCS (March 2026), FTS International to Noblis (August 2026) and Intelligent Waves to Bart & Associates (September 2026); Baird sold Altamira to Parsons at 12.8x expected 2026 EBITDA and Steampunk to Veritas; McLean sold Highlight Technologies to Empower AI and advised TENICA on McNally Capital's investment; Piper Sandler advised Agile Defense on its $660 million sale to Maximus.

Services is the colder lane. DC Advisory counted 112 US defense and government transactions in the first half of 2026, up 15% from 97, but only 43 in the second quarter, down from 69 in the first and a peak of 73 in Q4 2025, and calls government services "subdued". Capstone's September 2026 report says government contracting M&A "experienced an acute pullback in 2025". What still clears is differentiated: proprietary IP, cleared headcount and prime positions on durable vehicles. The adviser's job here is the contract-by-contract schedule, which is where the novation and SBA rungs below come in. The corridor bench is in our DC, Northern Virginia and Richmond guide.

Which adviser fits my deal size?

Size decides the bench as much as lane does, because the large banks' credits all sit above $500 million and the boutiques' credits are almost all undisclosed-value sales. This is our reading of the ledger, not a published standard.

Below about $10 million a business broker can be the right hire on a simple asset sale; above it, competitive tension between a strategic and a sponsor is what the fee buys. Our M&A advisor fees guide covers the fee scales.

What can block an aerospace or defense sale? The Deal-Gate Ladder

Up to six federal gates, and the order they bite in matters more than the list: two fire before anyone signs, two in the run-up to closing and two after it. I call this the Deal-Gate Ladder. An adviser who has sold A&D companies sequences these rungs before the teaser goes out; one who hasn't meets them in the buyer's markup of the purchase agreement. Every rule below is quoted from the current eCFR text, checked October 28, 2026. It is general information, not legal advice; your export-control and government-contracts counsel make the calls.

Rung 1: Will my CMMC status show up in diligence?

Yes, and from November 10, 2026 it starts deciding awards rather than only scores. The CMMC acquisition rule (90 FR 43560, published September 10, 2025) took effect November 10, 2025, which started Phase 1; under 32 CFR 170.3(e)(2), Phase 2 "begins one calendar year following the start date of Phase 1", when DoD "intends to include the requirement for CMMC Status of Level 2 (C3PAO)" as a condition of award. The clause, DFARS 252.204-7021, requires the contractor to "have and maintain for the duration of the contract a current CMMC status" for every information system that handles FCI or CUI; Final Level 2 status is current for three years with an annual affirmation. Status attaches to information systems and their CMMC UIDs, so a buyer folding you into its own IT environment must plan the reassessment. A Conditional status with an open plan of action becomes a closing item; no assessment at all on a CUI-heavy book becomes an escrow or a price cut. The file-sharing side is in our CMMC-compliant file sharing guide.

Rung 2: Does a foreign-influenced bidder trigger FOCI before we sign anything?

Yes, and that is the rung owners miss. 32 CFR 117.11(c)(2) reads: "When an entity with a favorable eligibility determination enters into negotiations for the proposed merger, acquisition, or takeover by a foreign interest, the entity will submit notification to the CSA of the commencement of such negotiations." The notice names the transaction type and the foreign investor and includes "a plan to negate or mitigate the FOCI", with the loan, purchase and shareholder agreements attached. A company is under FOCI when a foreign interest "has the power to direct or decide issues affecting the entity's management or operations". Mitigation scales with control: a board resolution where the foreign interest cannot elect a director; a security control agreement, with at least one cleared US citizen as an outside director, where it has board representation but the company stays under US control; a special security agreement where it effectively owns or controls the company, with a national interest determination for proscribed information; and a voting trust or proxy agreement at the top.

Rung 3: What does ITAR require when a registrant is sold?

Two notices, and a foreign buyer adds the earlier one. 22 CFR 122.4(b): "A registrant must notify the Directorate of Defense Trade Controls by registered mail at least 60 days in advance of any intended sale or transfer to a foreign person of ownership or control of the registrant or any entity thereof." A domestic sale is not exempt from the rest: 122.4(a) requires written notice "within five days of the event" of a change in ownership or control, and under 122.4(c) the surviving entity must list the licenses it will ship under, "since any license not the subject of notification will be considered invalid", and amend DDTC-approved agreements within 60 days. The 60-day notice "does not relieve the registrant from obtaining the approval required ... including the approval required prior to disclosing technical data", which is why a foreign bidder's diligence team cannot simply be handed the technical data package. The data-room side of that is in our ITAR-compliant data room guide.

Rung 4: When is a CFIUS filing mandatory?

When a foreign buyer acquires control of, or certain rights in, a TID US business that produces critical technology and would need a US export authorization to receive it. Critical technologies start with "defense articles or defense services included on the United States Munitions List" (31 CFR 800.215(a)). The declaration is due "thirty days before the completion date of the transaction" (800.401(g)); CFIUS then has a 30-day assessment period (800.405(b)), and a full notice runs a 45-day review (800.503) and a 45-day investigation (800.508). Failing to file a mandatory declaration risks a penalty of "$5,000,000 or the value of the transaction, whichever is greater" (800.901(b)). Notice filing fees run from $7,500 for a $5 million to $50 million deal to $300,000 at $750 million and above (800.1101). The scale is real: CFIUS's 2025 annual report, released August 7, 2026, counted 140 declarations and 207 notices, with mitigation in 25 transactions, according to Fenwick's summary. The 2026 ledger has foreign strategics on both lanes: Kongsberg, MDA Space, Trelleborg and Airbus's Satair.

Rung 5: Do government contracts need novation when the company is sold?

Only in an asset deal. FAR 42.1204(a) starts with the prohibition, "41 U.S.C. 6305 prohibits transfer of Government contracts from the contractor to a third party", and 42.1204(b) gives the exit: "A novation agreement is unnecessary when there is a change in the ownership of a contractor as a result of a stock purchase, with no legal change in the contracting party", so long as that party keeps control of the assets and performs the contract. In an asset purchase, the government "may, when in its interest, recognize a third party as the successor in interest", and the seller files three signed copies of the novation agreement plus a schedule of every affected contract with its number, type, total value and remaining unpaid balance (42.1204(e)); if the government declines, the original contractor stays on the hook (42.1204(c)). The Revolutionary FAR Overhaul model text carries the same rule at 42.903, and agencies including the Defense Department, Energy and State have adopted it by class deviation. That is why most GovCon exits close as stock or membership-interest sales, and why carve-outs of a prime's division take longest.

Rung 6: What happens to set-aside contracts after the sale?

They survive, but their value can change on the day the deal closes. 13 CFR 125.12(a): "Recertification of size and small business program status (i.e., 8(a), HUBZone, WOSB/EDWOSB, or SDVOSB) is required within 30 calendar days of a merger, acquisition, or sale of or by a concern or an affiliate of the concern, which results in a change in controlling interest." After a disqualifying recertification, a single-award set-aside keeps its options, but the agency cannot count them toward its goals (125.12(e)(2)(iii)(A)). On a small-business multiple-award contract, a sale to a buyer that is not itself small makes you "ineligible to submit an offer for a set aside or reserved award" and ineligible to receive options (125.12(e)(2)(ii)(B) and (iii)(B)), effective for deals closing on or after January 17, 2026 (125.12(g)). And a sale within 180 days after an offer but before award makes you ineligible for that pending set-aside award (125.12(e)(2)(i)). One citation trap: many guides still point to 13 CFR 121.404(g), which today covers subcontracting; 121.404(i) now refers readers to 125.12.

How do I check that an A&D adviser is a registered investment bank?

Search the firm on FINRA BrokerCheck by its CRD number, because the trading name and the registered entity often differ. A sale of stock or membership interests is a securities transaction, which is why every sell-side adviser ranked above has a registered broker-dealer behind it; an asset sale of a machine shop can be run by an unregistered business broker.

Type the CRD, not the name. TM Capital LLC (CRD 27438) shows as inactive, consistent with its move into Capstone; "Clearsight" returns unrelated entities; and a "Chesapeake" search returns no M&A adviser. Then ask for three dated closes with named counterparties.

Who did we leave off, and why?

Every firm below is real. What is missing is a dated A&D adviser-of-record credit in our window, or the firm is in the wrong category.

Capital-markets work counted as M&A. Baird's A&D page lists 2026 IPOs it underwrote; KeyBanc's latest A&D work we found is underwriting, an Astronics convertible and an AAR follow-on in September 2025, and its last A&D sell-side credit, United Titanium to Riverspan, is from August 2025, before the window; Raymond James's A&D tombstones in the window carry no role text and are mostly offerings. None of those is an M&A credit.

Ledger names we did not rank. Morgan Stanley, Guggenheim, PJT Partners, Perella Weinberg, Barclays and Wells Fargo appear above on single large deals, mostly buy-side, and are not ranked.

No dated credit in the window. Stifel, Moelis, Canaccord Genuity, Ducera, Bourne Partners, Agile Equity, Seale & Associates, PwC and Deloitte corporate finance, P&M Corporate Finance and Mesirow (its Beadlight to Loar credit is August 2025). DC Advisory publishes the market data cited above and leads the practice with Ellis Chaplin and Chris Oliver, but its deal pages would not load for us, so it is unranked rather than dismissed. Clearsight Advisors and BlackArch Partners are Regions-owned, and neither showed a dated A&D or GovCon credit we could confirm. Chesapeake Corporate Advisors appears in our DC guide on a 2026 GovCon recapitalisation, but we found no broker-dealer registration under that name.

Wrong category. AE Industrial Partners is an investor, not an adviser: it owns REDLattice and launched Attilius Technologies in August 2026. Renaissance Strategic Advisors was Booz Allen's strategic industry adviser on Ultra I&C, not its bank. Law firms such as Sheppard Mullin and Hogan Lovells handle regulatory work on deals like these but are not M&A advisers.

Single source only. Jefferies and Goldman Sachs on D-Fend rest on one news report, so they are labelled "per Calcalist". Houlihan Lokey's Beaufort, UCELIA and Unical credits rest on its own tombstones and are labelled the same way. Vendor-written listicles that date the same deal two different ways are not cited at all.

What do aerospace and defense M&A advisors charge?

No A&D adviser publishes a rate, so the best public evidence is in SEC filings. Mistras Group's merger proxy dated October 27, 2026, for its $20.35-a-share sale to H.I.G., says "Baird will receive a transaction fee of approximately $13 million for its services", contingent on closing, and puts the implied enterprise value at about $866.5 million, "approximately 9.1x LTM Adjusted EBITDA". That is roughly 1.5% of enterprise value, our arithmetic, on a testing and inspection company rather than a pure A&D business. Never treat 1.5% as a lower-middle-market rate; at $20 million to $100 million the shape is a monthly retainer plus a success fee on one of the Lehman-family scales in our M&A advisor fees guide, and the terms worth negotiating are whether the retainer is credited, the minimum fee, the tail period and exclusivity.

The rest of the cost stack is federal and fixed. A CFIUS notice costs $75,000 in filing fees on a $50 million to $250 million deal (31 CFR 800.1101); the ITAR, FOCI and SBA notices cost counsel time rather than fees. Diligence takes as long as it does: across the 733 M&A transactions in our State of M&A Data Rooms Q3 2026 dataset, the average time to close was about 7.9 months, and A&D gates sit on top of that.

What does the data room have to handle in an aerospace or defense sale?

Two kinds of material that must never share a room: commercial diligence, and controlled technical data. Financials, customer contracts, the cap table, the quality-of-earnings report and the contract schedule go in a standard deal room. ITAR technical data, CUI and anything covered by DFARS 252.204-7012 or a CMMC requirement go in a controlled environment, because DFARS 252.204-7012 requires that an external cloud provider storing covered defense information meet "security requirements equivalent to those established by the Government for the Federal Risk and Authorization Management Program (FedRAMP) Moderate baseline", and because showing ITAR technical data to a foreign bidder's team is an export that needs its own authorization. Classified material never goes in any commercial room.

For the commercial room, Peony's Data Room plan is the fit. At $52 per admin per month billed yearly ($75 monthly), with unlimited rooms, storage and free viewers, it gives the sell-side what an A&D process needs:

• A visitor group per bidder, so a prime, a sponsor and a foreign strategic never see each other's tranche or questions; the median room in our dataset hosts 5.5 bidders.
• An advanced signed NDA before the room opens, with an audit record, and one-click revoke when a bidder drops out.
• Per-viewer dynamic watermarks on every rendered page, so a leaked contract schedule traces to the person who opened it.
• Page-level analytics, which show which bidder read the program backlog and which skipped to the org chart.
• AI-drafted, cited first answers in Q&A: Peony drafts a first answer to each bidder question from the room's own documents, with citations, and nothing reaches the bidder until your team edits and publishes it. AI document Q&A can be switched on or off per visitor group, and document content is not used to train any model.

Sub-$50 million rooms in our dataset average about 1,206 files, 29 users and 79 Q&A questions. Deal Team ($64 per admin per month billed yearly, minimum four admins) adds routed expert-and-approver Q&A and advanced redaction.

For controlled material, use Peony Enterprise or the environment your contract names. Enterprise is custom-priced and is where Peony scopes ITAR, CUI, DFARS 252.204-7012 and CMMC requirements, with SAML SSO, BYOK and custom data residency. The Data Room plan is not an ITAR or CUI environment; standard hosting is AWS US (us-east-1), and Peony is not FedRAMP-authorized. If a prime or agency flows down FedRAMP or GCC High, use that environment for the controlled scope. And if you are selling above $500 million to counterparties whose deal teams require Datasite or Intralinks, use theirs; Datasite averages about $68,000 a year per contract, according to Vendr. The folder structure is in our M&A data room guide and our defense data room page. Start now.

So which aerospace and defense adviser should you hire?

The one whose dated closes sit in your lane and your size band, because A&D is four markets that share a keyword. A GovCon services firm should start with KippsDeSanto, then Baird above $250 million, and The McLean Group if the firm is small and cleared. A defense-tech company should start with Baird, then KippsDeSanto, and bring in Jefferies or Goldman Sachs only if the buyer set is public and large. An aerospace supplier or MRO shop should start with Lincoln, Harris Williams and Houlihan Lokey, and KAL Capital Markets below about $25 million. A roll-up target should ask which platform the bank has already sold into. In every lane, ask for the Deal-Gate Ladder in writing before you sign the engagement letter: which rungs apply to you, and in what order.

FAQ

Who are the best M&A advisors for aerospace and defense companies in 2026?

It depends on your lane, and the dated record names a short bench. KippsDeSanto & Co. holds the most dated sell-side credits we found, ten between December 2025 and October 2026 across GovCon, defense tech and defense suppliers; Robert W. Baird holds eight sell-side credits, all of them exclusive, with disclosed prices from $375 million to $876 million, including SciTec to Firefly and DZYNE to Ondas. For commercial aerospace suppliers and MRO, Lincoln International (seven dated credits), Harris Williams (Jet Parts Engineering and Victor Sierra to TransDigm, $2.2 billion) and Houlihan Lokey lead. KAL Capital Markets is the A&D-only lower-middle-market boutique, and The McLean Group covers smaller GovCon sales. Above $1 billion: J.P. Morgan, Jefferies, Evercore and Goldman Sachs.

Which investment banks have closed the most aerospace and defense M&A deals in the last 24 months?

On published counts, KippsDeSanto and Houlihan Lokey are the two that clearly clear ten. KippsDeSanto's Q3 2026 MarketView says it has announced 24 transactions in 2026 alone and 165+ since joining Capital One in 2019. Houlihan Lokey says its Aerospace, Defense & Government practice has closed 90+ transactions worth more than $17 billion since 2020, about 13 a year on our arithmetic. Baird (eight) and Lincoln International (seven) come next on the credits we could date ourselves between October 2025 and October 2026, a pace consistent with ten or more over 24 months but not proof of it. No public league table we could verify ranks lower-middle-market A&D advisers by count, so ask each bank for its list with dates.

Who are the top M&A advisors for defense contractors and government services companies?

For GovCon services, KippsDeSanto, Baird, The McLean Group and Piper Sandler hold the dated 2025-26 sell-side credits. KippsDeSanto sold MetroStar to Veritas Capital (December 2025), Sev1Tech to ERT (March 2026), FTS International to Noblis (August 2026) and Intelligent Waves to Bart & Associates (September 2026). Baird sold Altamira to Parsons for up to $375 million, a $330 million base price at 12.8x expected 2026 EBITDA (January 2026) and Steampunk to Veritas (August 2026). The McLean Group was exclusive adviser to Highlight Technologies on its sale to KKR's Empower AI (July 2026), and Piper Sandler advised Agile Defense on its $660 million sale to Maximus (October 19, 2026). Above $1 billion, J.P. Morgan and Evercore sold ARKA to CACI for $2.6 billion.

I own a $25M-revenue AS9100 machine shop or Part 145 MRO shop. Who should run my sale?

Start with the advisers whose dated credits are founder and sponsor exits where the value went undisclosed, which is where a shop your size sits. KAL Capital Markets (Kittyhawk to Machine Sciences, July 2026; Adaptive Dynamics to DTC, May 2026), Lincoln International (Tri-Mack to Trelleborg, October 2026; Precision Aerospace Holdings to Precinmac, April 2026), Harris Williams (Consolidated Boring to Applied Aerospace & Defense, March 2026), Houlihan Lokey (Precise Metal Products, October 2026) and, for MRO, Brown Gibbons Lang (Velocity Maintenance Solutions to Bombardier, February 2026). Ask each for three dated closes at your revenue and the five buyers it would call first. The 2026 roll-ups buying shops like yours include Greenbriar's Applied Aerospace & Defense, TJC's Acron Technologies and ATL's Precise Aerospace & Defense.

We are a venture-backed defense-tech company and a prime wants to buy us. Do we need a banker, and who does defense tech?

Usually yes, because a second bidder is what moves the price, and defense-tech buyers in 2026 include primes, public drone and space companies, sponsors and foreign strategics. Baird ran five of the dated defense-tech sales we found: SciTec to Firefly ($855 million, October 2025), Blue Canyon Technologies from RTX to MDA Space ($620 million), DZYNE to Ondas ($875.8 million), Resonant Sciences to Joby (about $500 million) and TSC to Blackstone's Falcata (October 2026). KippsDeSanto sold Zone 5 Technologies to Kongsberg and Orbion to York Space Systems, and Jefferies advised REDLattice on its $1.25 billion de-SPAC. DC Advisory calls defense technology 'white hot'. A foreign bidder adds the ITAR and CFIUS rungs, so pick a bank that has cleared them.

Can a foreign buyer acquire my ITAR-registered company, and when do CFIUS and the ITAR notice bite?

Yes, and 2026 had several: Kongsberg bought Zone 5 Technologies, and MDA Space agreed to buy Blue Canyon Technologies from RTX. Two clocks run before closing. Under 22 CFR 122.4(b), a registrant must notify DDTC by registered mail at least 60 days in advance of any intended sale or transfer to a foreign person of ownership or control. If you produce USML defense articles, you are very likely a TID US business with critical technology, and 31 CFR 800.401 requires a CFIUS declaration no later than 30 days before completion when the buyer would need an export authorization for that technology. CFIUS then has 30 days to assess it, or 45 plus 45 days on a full notice. Missing a mandatory filing risks a penalty of up to $5 million or the deal value, whichever is greater.

We hold a facility clearance and the best bidder is a PE fund with foreign limited partners. Will FOCI kill the deal?

Not usually, but it moves your first filing to the start of talks. Under 32 CFR 117.11(c)(2), a cleared company that enters negotiations for a merger, acquisition or takeover by a foreign interest notifies its cognizant security agency, DCSA for DoD contractors, of the commencement of such negotiations, with a plan to negate or mitigate the foreign ownership, control or influence. Whether a fund's foreign LPs create FOCI turns on whether a foreign interest has the power to direct or decide matters affecting your management or operations. Mitigation runs from a board resolution, through a security control agreement and a special security agreement, to a proxy or voting trust. Ask the sponsor for its FOCI history before you sign the LOI.

Do my government contracts transfer when I sell, or do I need a novation agreement?

In a stock sale they stay where they are; in an asset sale each contract needs the government's consent. FAR 42.1204(b) says a novation agreement is unnecessary when ownership changes through a stock purchase with no legal change in the contracting party. In an asset deal, 41 U.S.C. 6305 prohibits transferring a government contract, and the contracting officer may, when it is in the government's interest, recognize the buyer as successor; the seller submits three signed copies of the novation agreement and a list of every affected contract with its value and unpaid balance. The FAR Overhaul model text moves the same rule to 42.903. That is why most GovCon exits close as stock or membership-interest sales.

Will selling my small business to a large company cost me my set-aside contracts?

It can, and the 2026 rules made it sharper. 13 CFR 125.12(a) requires size and program-status recertification within 30 calendar days of a merger, acquisition or sale that changes the controlling interest. After a disqualifying recertification you keep performing, and on a single-award set-aside you stay eligible for options, but the agency cannot count them toward its small-business goals. Since January 17, 2026, after a sale to a buyer that is not small under the contract's NAICS code, you are ineligible to receive options or to offer on set-aside orders under a small-business multiple-award contract. The rule older guides cite as 13 CFR 121.404(g) now sits in 125.12.

Our CMMC Level 2 assessment is not finished. Will buyers discount us or walk away?

Expect a price or structure adjustment more often than a walk, and expect the question in the first diligence request. The CMMC acquisition rule took effect November 10, 2025, and Phase 2 begins one calendar year later, on November 10, 2026, when DoD intends to make Level 2 (C3PAO) a condition of award for applicable contracts. DFARS 252.204-7021 requires the contractor to 'have and maintain for the duration of the contract a current CMMC status' for every system handling FCI or CUI, and a Conditional status must close its plan of action and milestones to become Final. A buyer reads your SPRS score and CMMC UIDs, then prices the gap as an escrow, a closing condition or a lower multiple.

What does the data room have to handle in an aerospace or defense company sale?

Two kinds of material that must never share a room: commercial diligence and controlled technical data. Financials, contracts, the cap table and the quality-of-earnings report go in a standard deal room. For that, Peony's Data Room plan at $52 per admin per month billed yearly gives each bidder its own visitor group behind a signed NDA, dynamic watermarks with the viewer's identity on every page, page-level analytics, and AI-drafted first answers to bidder questions, cited to the room's own documents, that your team edits and publishes. ITAR technical data, CUI and anything under DFARS 252.204-7012 or CMMC belongs on Peony Enterprise, custom-priced with SAML SSO, BYOK and custom data residency, or in the environment your contract names; the Data Room plan is not an ITAR environment. Classified material never goes in any commercial room.

What do aerospace and defense M&A advisors charge, and what does the whole sale cost?

No A&D adviser publishes a rate, so the best public evidence is SEC-filed. Mistras Group's October 27, 2026 merger proxy says Baird will receive a transaction fee of approximately $13 million, contingent on closing, on an implied enterprise value of about $866.5 million, roughly 1.5% on our arithmetic; Mistras is a testing and inspection company, not a pure A&D business. Below public-company scale, expect a monthly retainer plus a success fee on a Lehman-style scale. Add the federal costs, such as a $75,000 CFIUS notice filing fee on a $50 million to $250 million deal. A Peony data room runs $52 per admin per month billed yearly, against Datasite's average of about $68,000 a year per contract, according to Vendr.

Related Resources

• Best industrial M&A advisors: the manufacturing bench, with a short A&D section that points here.
• Best M&A advisors in Washington DC, Northern Virginia and Richmond: the GovCon corridor bench and state tax rules.
• Best M&A advisors: the cross-sector hub.
• ITAR-compliant data room: what the 120.54 carve-out and deemed exports mean for sharing technical data.
• CMMC-compliant file sharing: CUI, NIST SP 800-171 and Level 2 in practice.
• M&A advisor fees: retainers, success fees and Lehman-family scales.
• M&A advisor vs broker vs investment bank: which intermediary fits which deal.
• Sell-side due diligence: what to prepare before the buyer asks.
• State of M&A Data Rooms: 733 transactions, files, bidders and time to close.
• M&A data room: the folder structure and staging for a sell-side room.