Washington Harbour Partners

Venture capital firm
Arlington, Virginia, USA$4.7B AUMwww.washingtonharbour.comSee connections →

At a glance

Washington Harbour Partners appears in 4 funding rounds tracked by ValueAddVC since 2026, leading 2. Its most frequent sector in these rounds is Defense & Space, and its most recent tracked deal was Kapta Space's $24M Series A round (Oct 9, 2026). It co-invests most often with Y Combinator.

Strategy

Geographies
Arlington, Virginia, USA

Recent changes

  1. Oct 9, 2026Invested in Kapta Space (Series A, $24M) PR Newswire
  2. Sep 8, 2026Invested in Stoke Space (Series E, $1B) TechCrunch
  3. Aug 6, 2026Invested in Hadrian (Series D, $1.37B) Hadrian
  4. Jan 5, 2026Invested in Array Labs (Series A, $20M) PR Newswire

Portfolio

5 total

Recent Investment Activity

4

Track record: led 2 and participated in 2 of 4 tracked venture rounds · 4 in the last 12 months · led 1 Series A, 1 Series D

DateCompanyEventRoleAmountValuationInvestorsSource
Oct 9, 2026Kapta SpaceSeries ALed$24M—
Washington Harbour PartnersLeadunverifiedBison VenturesMetaVCMYDA CapitalEntrada Ventures+2 more
PR Newswire
Sep 8, 2026Stoke SpaceSeries EParticipated$1B$10BTechCrunch
Aug 6, 2026HadrianSeries DLed$1.37B$7.87B
Washington Harbour PartnersLeadunverifiedValor Equity PartnersLeadunverified137 VenturesLeadunverifiedBaillie GiffordLeadunverifiedJPMorganChase Strategic Investment GroupLeadunverified1789 CapitalunverifiedApollo Global ManagementunverifiedT. Rowe PriceunverifiedCapitalGunverifiedAndreessen HorowitzunverifiedFounders FundunverifiedLux CapitalunverifiedAltimeter CapitalunverifiedConstruct CapitalunverifiedWCM Investment ManagementMorgan Stanley Wealth Management
Hadrian
Jan 5, 2026Array LabsSeries AParticipated$20M—
Washington Harbour PartnersunverifiedY CombinatorunverifiedAnimal CapitalunverifiedCatapult VenturesKompas VCMaioraAera VC+2 more
PR Newswire

Sector / Stage Activity

By sector (portfolio)
Space
3 · 60%
Defense
1 · 20%
Energy
1 · 20%
By stage (tracked rounds)
Series A
2 · 50%
Series E
1 · 25%
Series D
1 · 25%

Co-Investors

12

Similar Firms

overlapping sector, stage or region

Value Add Research

Latest Pulse

  1. Kapta Space Raises $24M For Spaceborne RadarSeattle-based Kapta Space raised a $24 million Series A led by Washington Harbour Partners to scale production of its spaceborne radar payloads and fund its first orbital demonstration.→
  2. Stoke Space Raises $1B to Out-Reuse SpaceXStoke Space closed a $1 billion Series E led by Point72 Ventures and Spark Capital, pushing total funding to $2.3 billion as it builds a rocket designed so both stages fly back and refly.→
  3. This Week's Mega-Rounds, By the NumbersHadrian's $1.37B round, Function Health's $450M raise and OLIX's $312M photonic-chip round pushed this week's three largest US-linked venture rounds past $2.1B combined, none of it going to a foundation model.→
  4. Hadrian Raises $1.37B to Automate Defense FactoriesHadrian raised a $1.37B Series D at a $7.87B valuation -- roughly 5x its prior mark -- to build automated factories that machine precision parts for SpaceX, Anduril and other aerospace and defense suppliers.→
  5. Hadrian Valuation Hits $7.9B on Defense BoomHadrian raised $1.37 billion led by Baillie Gifford and JPMorgan Strategic Investment Group at a $7.9 billion valuation, more than quadrupling its January mark as investors pour capital into AI-driven defense manufacturing.→

Washington Harbour Partners FAQ

What companies has Washington Harbour Partners invested in?

Washington Harbour Partners' portfolio includes Kapta Space, Stoke Space, Hadrian, Standard Nuclear, Array Labs.

Who does Washington Harbour Partners co-invest with most?

In the rounds Value Add tracks, Washington Harbour Partners most often invests alongside Andreessen Horowitz (2 shared deals), Industrious Ventures (2 shared deals), Scribble Ventures (2 shared deals), StepStone Group (2 shared deals), Y Combinator (2 shared deals).

Sources & methodologyshow
Where these figures come from

Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.

How we verify data · Suggest a correction