12 aerospace and defense M&A advisors active in Washington DC in 2026. Covers defense tech, space systems, cybersecurity, and GovCon with deal sizes and recent transactions.
Defense and aerospace M&A in DC runs differently from every other market.
Eight of the ten largest defense primes are headquartered within 30 miles of DC. That shapes the buyer pool.
Most deals here involve cleared facilities, sensitive IP, and DoD contract novation. General M&A experience is not enough.
Pick an advisor who has closed deals in your sub-sector before. Someone who understands DCSA timelines and M&A process specifics for defense will save you months.
| Deal Type | Deal Size | Sector Focus | Website | |
|---|---|---|---|---|
| KippsDeSanto | Both | $25M - $500M | Aerospace, Defense, GovTech | kippsdesanto.com |
| William Blair A&D | Both | $50M - $2B | Aerospace, Defense, Gov Services | williamblair.com |
| Stephens A&D | Both | $25M - $750M | Defense, Space, Aerospace OEM | stephens.com |
| Mesirow Investment Banking | Both | $20M - $500M | Defense, Aerospace, MRO | mesirow.com |
| Alderman & Company | Sell-side | $10M - $250M | Aerospace MRO, Defense Sub-tiers | aldermanco.com |
| Houlihan Lokey A&D | Both | $50M - $5B+ | Aerospace, Defense, Gov Services | hl.com |
| Raymond James D&G | Both | $25M - $500M | Defense, Space, Federal IT | raymondjames.com |
| Piper Sandler Defense | Both | $50M - $1B+ | Defense Tech, Cybersecurity, Space | pipersandler.com |
| Kroll A&D | Both | $25M - $1B | Defense, GovTech, Cybersecurity | kroll.com |
| FOCUS Investment Banking | Both | $10M - $150M | Defense Tech, Gov IT | focusbankers.com |
| DC Advisory A&D | Both | $25M - $500M | Aerospace, Defense, Gov Services | dcadvisory.com |
| BGL A&D Group | Sell-side | $15M - $350M | Defense Sub-tiers, Aerospace Mfg | bglco.com |
How to verify an advisor's track record
Ask for a named deal list in your exact sub-sector - aerospace MRO, defense tech, or space systems.
Vague portfolios without buyer names are a red flag. Press for close dates and deal sizes too.
Advisors who have handled legal due diligence on cleared contracts know what buyers will scrutinize first. That experience matters before you sign an engagement letter.
Use Ellty to share your CIM and contract summary with shortlisted advisors under NDA. Track who opens the files before your first call. Compare the Los Angeles aerospace and defense advisor list to see how DC firms differ.
Running an aerospace M&A process in DC?
Set up your data room before your first advisor meeting.
Start free 14-day trialWhat an M&A deal looks like: 6 stages
Aerospace and defense deals in DC run ten to sixteen months from first call to close. DCSA reviews add time other markets don't see.
| What happens | What you need ready | |
|---|---|---|
| Stage 1: Preparation | Run QoE, draft CIM, shortlist advisors | Three years of financials and contract backlog by program |
| Stage 2: Advisor engagement | Sign engagement letter, agree on buyer list | Facility clearance status, cap table, cleared headcount |
| Stage 3: Marketing | CIM distributed, NDAs signed, management calls booked | Ellty data room live with CIM and program financials |
| Stage 4: LOI | Buyers submit IOIs, LOIs negotiated, exclusivity signed | Clean IP ownership records, no open protests or audits |
| Stage 5: Due diligence | Buyer reviews financial, legal, and technical records | Full Ellty data room organized by program, contract, personnel |
| Stage 6: Close | Purchase agreement signed, DCSA notified, funds transfer | Novation agreements drafted, reps and warranties signed |
12 aerospace and defense M&A advisors in Washington DC
These 12 firms actively close A&D deals in the DC metro area. Coverage spans defense tech, space systems, cybersecurity, and aerospace sub-tiers.
1. KippsDeSanto
The only pure-play investment bank exclusively focused on aerospace, defense, and government technology.
- Recent Deals: Advised on Zone 5 Technologies' sale to Kongsberg Defence for ~$205M (Oct 2025). Facilitated 158 total A&D transactions as of May 2026. Tracks 125 D&G deals per quarter.
- LinkedIn: KippsDeSanto on LinkedIn
- Sector Focus: Aerospace, defense, government technology, cybersecurity, federal IT
- Deal Type: Both
- Deal Size: $25M - $500M
- Location: McLean, VA (DC metro)
- Website: kippsdesanto.com
2. William Blair Aerospace & Defense
Runs a dedicated A&D and government services practice from Chicago and Washington DC.
- Recent Deals: Advised Trexon (Audax Private Equity) on its pending sale to Amphenol Corp for ~$1B (2025). Advised Robin Radar shareholders on its sale to Parcom Capital Management (2025).
- LinkedIn: William Blair on LinkedIn
- Sector Focus: Aerospace, defense, government services, national security
- Deal Type: Both
- Deal Size: $50M - $2B
- Location: Washington, DC and Chicago, IL
- Website: williamblair.com
3. Stephens Aerospace & Defense
DC-based A&D team with senior bankers who have hands-on military technology experience.
- Recent Deals: Advised Kongsberg Defence on its acquisition of Zone 5 Technologies (Dec 2025). Active in cross-border A&D transactions across the US and Europe.
- LinkedIn: Stephens on LinkedIn
- Sector Focus: Defense, space systems, aerospace OEM, cross-border
- Deal Type: Both
- Deal Size: $25M - $750M
- Location: Washington, DC
- Website: stephens.com
4. Mesirow Investment Banking A&D
Publishes monthly aerospace and defense M&A market updates tracking middle-market deal flow.
- Recent Deals: December 2025 update tracked CACI's $2.6B acquisition of ARKA Group (Blackstone) and TransDigm's $960M acquisition of Stellant Systems. Active in mid-market defense sell-side.
- LinkedIn: Mesirow on LinkedIn
- Sector Focus: Defense, aerospace, MRO, defense electronics
- Deal Type: Both
- Deal Size: $20M - $500M
- Location: Chicago, IL and Washington, DC
- Website: mesirow.com
5. Alderman & Company
Specialist boutique running sell-side for aerospace MRO and defense sub-tier manufacturers.
- Recent Deals: Closed $2B+ in aerospace and defense M&A since founding. Publishes quarterly deal sentiment surveys. Q1 2026 survey shows active buyer appetite for mid-market defense suppliers.
- LinkedIn: Alderman & Company on LinkedIn
- Sector Focus: Aerospace MRO, defense sub-tiers, aviation supply chain
- Deal Type: Sell-side
- Deal Size: $10M - $250M
- Location: Washington, DC
- Website: aldermanco.com
Selling a defense sub-tier business?
Track which buyers open your technical files before the LOI stage.
Start free 14-day trial6. Houlihan Lokey Aerospace & Defense
Closed 35+ A&D transactions worth nearly $8B since 2020 with a 30-banker dedicated practice.
- Recent Deals: Advised BLR Aerospace on its sale in 2025. Ranked No. 1 globally for industrials M&A under $5B in 2025. Covers defense, government services, and aerospace OEM.
- LinkedIn: Houlihan Lokey on LinkedIn
- Sector Focus: Aerospace, defense, government services, industrial tech
- Deal Type: Both
- Deal Size: $50M - $5B+
- Location: Washington, DC and Los Angeles, CA
- Website: hl.com
7. Raymond James Defense & Space
Publishes a quarterly Defense and Space Market Update tracking mid-market deal flow.
- Recent Deals: Active in middle-market defense, space, and federal IT advisory in 2025-2026. Covers defense services and space system manufacturers in the DC metro corridor.
- LinkedIn: Raymond James on LinkedIn
- Sector Focus: Defense, space systems, federal IT, diversified industrials
- Deal Type: Both
- Deal Size: $25M - $500M
- Location: Washington, DC and St. Petersburg, FL
- Website: raymondjames.com
8. Piper Sandler Defense & Government
Acquired DC boutique G Squared Capital Partners in September 2025 - adding 200+ combined A&D transactions.
- Recent Deals: Acquired G Squared Capital Partners (Sept 2025), a DC defense tech boutique. G Squared closed eight GovCon deals in 2025. Covers cybersecurity, space, and digital modernization.
- LinkedIn: Piper Sandler on LinkedIn
- Sector Focus: Defense tech, cybersecurity, space, software, health IT
- Deal Type: Both
- Deal Size: $50M - $1B+
- Location: Washington, DC and Minneapolis, MN
- Website: pipersandler.com
9. Kroll Aerospace, Defense & Government Services
One of the most active mid-market A&D advisors globally - pairs M&A advisory with cyber and financial diligence.
- Recent Deals: Active in middle-market A&D advisory across the US and Europe through 2025-2026. Combines M&A advisory with cybersecurity due diligence - valuable in defense tech deals.
- LinkedIn: Kroll on LinkedIn
- Sector Focus: Defense, GovTech, cybersecurity, aerospace
- Deal Type: Both
- Deal Size: $25M - $1B
- Location: Washington, DC and New York, NY
- Website: kroll.com
10. FOCUS Investment Banking
DC-area franchise ranked No. 2 in Axial's Top 25 Lower Middle Market Banks for Q2 2025.
- Recent Deals: Advised Opinion Dynamics on its acquisition by E Source (Aug 2025). 228+ total closed deals as of Jan 2026. Active in defense tech and government IT.
- LinkedIn: FOCUS Investment Banking on LinkedIn
- Sector Focus: Defense tech, government IT, technology, business services
- Deal Type: Both
- Deal Size: $10M - $150M
- Location: Vienna, VA (DC metro)
- Website: focusbankers.com
11. DC Advisory Aerospace & Defense
London-headquartered mid-market bank with a dedicated A&D team serving DC-area clients.
- Recent Deals: Active in commercial aerospace and defense M&A advisory globally. Published 2025 insight on M&A activity taking off for commercial aerospace and defense.
- LinkedIn: DC Advisory on LinkedIn
- Sector Focus: Aerospace, defense, government services, commercial aviation
- Deal Type: Both
- Deal Size: $25M - $500M
- Location: Washington, DC and London, UK
- Website: dcadvisory.com
12. BGL Aerospace & Defense Group
Publishes annual A&D M&A trend reports covering lower mid-market defense supplier transactions.
- Recent Deals: Published 2026 key aerospace and defense M&A trends report. Active in sell-side for defense sub-tier manufacturers and aerospace component suppliers.
- LinkedIn: BGL on LinkedIn
- Sector Focus: Defense sub-tiers, aerospace manufacturing, precision components
- Deal Type: Sell-side
- Deal Size: $15M - $350M
- Location: Washington, DC and Chicago, IL
- Website: bglco.com
Cybersecurity and IT diligence in defense deals
Defense tech deals require IT due diligence that goes beyond standard commercial M&A.
CMMC compliance status affects every defense software and IT services deal now. Buyers price non-compliance risk at the LOI stage.
Cybersecurity infrastructure is a core value driver in defense tech acquisitions. Buyers want to know what certifications are in place before they make an offer.
Use Ellty with dynamic watermarking and screenshot protection when sharing security architecture documents. Not every buyer needs access to your full stack during IP due diligence.
DoD budget shifts and deal pricing
The DoD budget drives defense M&A valuations more directly than any other market factor.
Space, AI, and autonomous systems are getting more budget in 2025-2026. Companies in those segments see premium multiples.
Legacy platforms with uncertain procurement cycles trade at discounts. Buyers factor three-year budget forecasts into offer prices.
Use Ellty to share your program revenue breakdown with buyers. Serious acquirers review those files carefully - track who spends real time on them.
Deal structures in aerospace and defense transactions
Earn-outs are common when deal value depends on contract renewals happening after close.
Buyers use them to price renewal risk without walking away. Sellers should negotiate earn-out caps and milestones before LOI.
Reps and warranties insurance covers most defense deals above $50M now. Your advisor should know which carriers write policies on cleared-company transactions.
Read the types of M&A deals guide before you negotiate structure. Asset deals vs. stock deals have very different implications for cleared facilities.
How Ellty helps you close an M&A deal in Washington DC
You have shortlisted your DC aerospace advisor. Here is how to prepare for the process.
- 1.Upload program financials and contract dataOrganize files by program and vehicle before uploading. Advisors judge preparation on day one.
- 2.Set access permissions by buyer and NDA statusRequire email verification before any buyer accesses technical files. Add passwords for program data.
- 3.Track which buyers review your program dataSee which buyers open your contract backlog and how long they spend. Serious buyers review renewal dates.
Common questions about Washington DC aerospace and defense M&A advisors
- DC A&D advisors understand facility clearances, DCSA novation timelines, and program-specific contract risk. General M&A firms miss details that buyers price hard in diligence.
- Most deals run ten to sixteen months. DCSA review and novation agreements add steps that non-defense deals don't have.
- Expect three years of financials, a program backlog by contract vehicle, and facility clearance status. Cleared headcount and IP ownership records come next.
- Buyers now price CMMC status at the LOI stage. Non-compliance in defense software deals can reduce your multiple by one to two turns.
- Before your first advisor meeting. Organized program data signals readiness. Disorganized data rooms slow every deal stage in this market.
- Yes. KippsDeSanto, Piper Sandler, and Kroll all cover space systems and cybersecurity alongside traditional defense and GovCon.
