Key facts
- Washington Harbour is a venture capital firm based in Arlington, Virginia with 42 tracked portfolio companies.
- Notable positions include OpenAI, xAI, Anduril Industries, Shield AI, Epic Games.
- Washington Harbour has 61 funds on record, raising $1.6B across the 59 that report a size.
- The team roster lists 26 people.
- Washington Harbour reports $597.3M in regulatory assets under management across 75 private funds, per its SEC Form ADV (2026-03).
About Washington Harbour
Founded in 2019, Washington Harbour is a private investment firm based in Arlington, Virginia. The firm focused on scaling mission-critical technology companies operating at the intersection of national security, intelligence, and advanced digital infrastructure. The firm partners with management teams to build category leaders serving U.S. and allied government customers across cyber, data, AI, and defense technology. The firm Partners supports portfolio companies through access to mission-critical customers, navigation of complex procurement environments, and scaling of secure, compliant technology platforms.
Registered with the SEC
Form ADV · 2026-03 · CRD 309915- Regulatory AUM
- $597.3M
- Private fund assets
- $3.5B
- Private funds
- 75 · 74 private equity, 1 hedge
- Staff
- 12
- Registered office
- ARLINGTON, VA
- SEC status
- Approved
Reports custody of client assets.
Source: SEC Investment Adviser Public Disclosure, Form ADV (registered as WASHINGTON HARBOUR PARTNERS LP).
- ·The book's top 25 — of 42 recorded positions
- ·Watchlist + alerts for Washington Harbour's activity
Portfolio, priced
42 companies · by our current valuations| Company | Industry | Valuation | First invested | Role |
|---|---|---|---|---|
| OpenAI | Software Development Applications | $894.3B | — | |
| xAI | Business/Productivity Software | $250.0B | — | |
| Anduril Industries | Aerospace and Defense | $110.9B | — | |
| Shield AI | Aerospace and Defense | $13.6B | — | |
| Epic Games | Entertainment Software | $12.2B | — | |
| Stoke Space | E-Commerce | $9.0B | — | |
| Hadrian | Aerospace and Defense | $7.9B | — | |
| NinjaOne | — | $5.0B | — | |
| Erebor Bank | — | $4.0B | — | |
| Radiant | Alternative Energy Equipment | $1.9B | — | |
| Epirus | Aerospace and Defense | $1.1B | — | |
| Apex | — | $1.0B | — | |
| VulcanForms | Other Commercial Services | $991.3M | — | |
| Standard Nuclear | — | $838.0M | — | |
| Saildrone | — | $588.0M | — | |
| + 27 more companies · a free account shows the top of the book | ||||
Funds
6 of 61 recorded- Washington Harbour Enduring Advantage Fund, LP2026—
- Washington Harbour GS, LP2026$11.5M
- Washington Harbour Trusted Space LP2026$18.5M
- Washington Harbour Navigation LLC2026$5.0M
- Washington Harbour Sandbox LLC2025$1.0M
- Washington Harbour Metaverse XVII LLC2025$5.9M
$1.6B raised across the 59 funds that report a size
All 61 funds →Partners, principals, and the people who answer a pitch. Pro members reveal contacts with credits.
Frequently asked
- What companies does Washington Harbour invest in?
- Washington Harbour has 42 recorded portfolio companies, including OpenAI, xAI, Anduril Industries, Shield AI.
- What is Washington Harbour's AUM?
- Washington Harbour manages approximately $4.7B in assets.