Washington Harbour Partners LP

CandidateSEC-registered adviserRaising· Arlington, Virginiawashingtonharbour.com

Washington Harbour partners with America’s top technology innovators to enable them in solving the nation’s most pressing economic and national security needs.

In the firm's own words, from its website.

Reported fund assets
$31.2M
sum of its funds' Form ADV filings, last 30 months
New companies, 12 mo
7
Investment team
13
Latest vintage
2026
More
Ask DFX about thisView relationshipsFind contactsInvestments (11)Team (19)Funds
As of · the latest observation of this organization; filed figures are as of its latest Form ADV

14 additional team members, 17 additional co-investors and affiliates, 27 additional investments, funds and LPs, 2 events, 2 verified contacts (1 general firm email, 1 firm phone)

Every relationship, signal and contact on this record, with the source on each.

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

What matters now

  1. 14 vehicles
    on Form D, 18 months

    $76.3M reported sold so far.

    A Form D is filed when a vehicle takes its first money, so these are open to LPs now.

    FactSEC Form D filingsFor LPs, fund-of-funds, placement agentsVehicles →
  2. 7 companies
    new in 12 months

    7 new companies in the last 12 months.

    A firm writing cheques this quarter is one a founder can pitch now.

    Factfunding announcements, Form D, the firm's portfolio pageFor Founders, co-investorsInvestments →
  3. 2 companies
    portfolio raising

    2 portfolio companies have new financing on record in 6 months without this firm named on the round; the latest on 28 Jul 2026 ($21M round).

    A portfolio company raising again is a follow-on decision for the firm and a co-investment opening for others.

    FactPress release wires (PR Newswire, GlobeNewswire; Business Wire's RSS answers 403 and is not read)For Co-investors, LPs, lendersInvestments →
  4. 1 departure
    people, 12 months

    Irby Thompson departed (seen on or before 30 Sep 2026; the date it happened is not on record).

    A partner leaving or arriving changes who decides, and who a founder or LP should call.

    InferenceVenture organization websites (about, team, portfolio, thesis, news pages)For Founders, LPs, recruitersTeam →
  5. 2 deals
    with Altimeter Capital Management

    Invests most often alongside Altimeter Capital Management (2 shared deals).

    last together 2 Apr 2026 · The firms it syndicates with are the likeliest to see the same deals and to fill out its rounds.

    Measuredshared rounds and portfolio companies on recordFor Founders building a round, co-investorsCo-investors →

Relationship network

71 connected entities8 observed rounds1 repeat counterparty2026

From financing rounds and every investor named in them, Form ADV and Form D filings, the firm's funds and team, and disclosed LP commitments in the venture capital graph. A round's amount is the size of the round, not money that moved between two investors.

Some relationships on this record are counted rather than named here. They open with the full profile.

Click any name or line for the rounds and sources behind it. Line weight is rounds together; dashed lines are inferred.

Reading the network
  • Sponsor
  • Company
  • Fund or vehicle
  • Person

Co-investors are read from the rounds: three or more shared rounds is a strong observed relationship, two a repeat co-investor, one a single round. Funds and people are structural. Nothing is scored that a reader cannot check.

How am I connected?

Name your firm, a company or a person, and DFX finds the published routes to Washington Harbour Partners LP: a shared portfolio company or board, a prior employer, a co-investor, a shared LP or service provider. Every step is a filed or published record with its source; none is a guess about who knows whom.

See how you connect to Washington Harbour Partners LP

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

Investing

11 companies on record, 7 new in 12 months
Investments on record
11 companies, 8 partner-attributed
CompanyRoundRolePartnerRound sizeThis investorDateSource
Einpresswireportfolio listingunknownunknownunknownunknownSep 16, 2026Fact Firm website
Groundswell Launches New Brandportfolio listingunknownunknownunknownunknownSep 16, 2026Fact Firm website
Raft’s Big Decision & Vision for the Digital Battlefieldportfolio listingunknownunknownunknownunknownSep 16, 2026Fact Firm website
Stated thesis versus observed behaviour
18 observed deals
Stated (the firm’s website)
Sectors
ai, enterprise software, healthcare, space, defense, logistics, industrial
Stages
not stated or not yet read
Geography
not stated
Check size
not stated; DFX does not estimate checks from round sizes
Self-described
venture capital
Observed (from deals on record)
Stage at participation
seed 33%series a 33%series b 17%series d plus 17%
Stage at first entry
series a 40%seed 20%series b 20%series d plus 20%
Industries, each company once
Hardware and deep tech, Software or Tech-enabled and IT services (2)
lead rate 57%follow-on rate 29%new companies, 12 months 7

Team

19 current, 2 departed
Investment team
19 current, 2 departed
2 departed (kept with end dates)
  • Irby Thompson · Operations Team · ? to Sep 30, 2026 Inference
  • Scott L Barnes · Chief Compliance Officer And Chief Financial Officer · Apr 1, 2019 to Nov 7, 2022 Inference
Contacts
1 general firm email, 1 firm phone

1 general firm email, 1 firm phone on record, each with its source. Values open with the complete profile.

Funds and LPs

19 vehicles, 0 LPs disclosed
Funds and vehicles
19 reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
WH Strategic Opportunities Fund XIII LPOpportunity fund2026 form d first saleFundraisingunknownunknown$6.4M
of $7.0M
Apr 16, 2026
WH Growth Fund II, LPGrowth fund2026 form d first saleFundraisingunknownunknown$13.8M
of $15.7M
Feb 19, 2026
WH Strategic Opportunities Fund Xii LPOpportunity fund2026 form d first saleNewly closedunknownunknown$10.0M
of $10.0M
Apr 16, 2026
Limited partners
0 LPs, 0 disclosed commitments
No LP commitment on record. An LP edge needs a public disclosure with a quote: a pension report (see Limited partners for the plans read), a fund announcement naming the LP, or a Form ADV owner. The fund page carries the LP’s reported performance.
Known LPs and allocators
0 relationships across the firm's funds, from public pensions and the allocator graph
No allocator names this firm or its funds in a public disclosure DFX holds.

Relationships across DFX

20 co-investors · on 4 other DFX graphs
Co-investors
20 counted from shared deals, for the whole firm
Across DFX and the capital chainon 4 other DFX graphs Show
Across DFX
Across the graphs

Washington Harbour Partners LP is the same institution as 4 records in RIA and Wealth, Private Credit, Independent Sponsors and Private Equity.

RIA and Wealth1Private Credit1Independent Sponsors1Private Equity1

DFX found 4 relationships across 4 datasets

Which record it is in each graph, what it is called there, and what the two were joined on.

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

Checking your plan…

Evidence and history

7 dated events, 54 observations from 3 sources
Timeline
7 dated events
  1. seen on or beforeSep 30, 2026
    Irby Thompson (Operations Team) no longer on the team page of Washington Harbour Partners LP
    Person leftPeopleInferenceIrby ThompsonFirm website
  2. seen on or beforeSep 24, 2026
    Washington Harbour Partners LP: PE_WITH_VENTURE_ACTIVITY -> CANDIDATE_VC (no sworn venture fact yet (name or round mention only))
    Classification changedClassificationInferenceno URL
  3. Nov 7, 2022
    Scott L Barnes (Chief Compliance Officer And Chief Financial Officer) no longer on Schedule A of Washington Harbour Partners LP
    Person leftPeopleInferenceScott L BarnesForm ADV
  4. Oct 1, 2022
    Stephen Edward Guffey joined Schedule A of Washington Harbour Partners LP as Chief Compliance Officer And Chief Financial Officer
    Person joinedPeopleFactStephen Edward GuffeyForm ADV
  5. Jul 10, 2020
    Washington Harbour Partners LP first filed Form ADV (ERA)
    First SEC adviser filingOrganizationFactForm ADV
Identity and regulatory footprint
Address, phone, Form ADV filing and ownersForm ADV filed Jul 28, 2026 · 75 private fundsShow
Headquarters
Arlington, VAadviserinfo.sec.gov
Office address
unknownadviserinfo.sec.gov
Business phone
unknownadviserinfo.sec.gov
Website
washingtonharbour.com
SEC adviser type
Registered investment adviseradviserinfo.sec.gov
SEC exemption claimed
unknown
Latest Form ADV
Jul 28, 2026
Private funds reported
75 (0 venture capital funds)adviserinfo.sec.gov
Private fund gross assets, adviser total
$3.5Badviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
Regulatory AUM
$855Mthe adviser's RAUM, a regulatory measure, never a fund size
Employees
8
Owners on Schedule A
Washington Harbour Management GP LLC (General Partner), owns under 5%
Classification history
Every classification this record has carried3 on recordShow
  1. Sep 24, 2026
    Candidate (candidate, 50%)
    No sworn venture fact yet (name or round mention only)
  2. Sep 23, 2026
    Private equity with venture activity (probable, 75%)
    Registered adviser; venture funds are 0% of 75 private funds
  3. Sep 12, 2026
    Private equity with venture activity (probable, 75%)
    Registered adviser; venture funds are 0% of 38 private funds
Evidence
54 observations from 3 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
SEC adviser typeRegistered investment adviserJul 28, 2026FactForm ADV
SEC adviser typeRegistered investment adviserAug 15, 2024FactForm ADV
First Form ADV filing2020-07-10Jul 28, 2026FactForm ADV
First Form ADV filing2020-07-10Aug 15, 2024FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-25Sep 26, 2026FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-23Sep 24, 2026FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-21Sep 23, 2026FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-22Sep 23, 2026FactForm ADV
Adv history loadedadv-hist-1Sep 12, 2026FactForm ADV
Latest Form ADV filing2026-07-28Jul 28, 2026FactForm ADV
Latest Form ADV filing2024-08-15Aug 15, 2024FactForm ADV
Venture share of reported funds0Jul 28, 2026FactForm ADV
Venture share of reported funds0Aug 15, 2024FactForm ADV
Business phoneAug 15, 2024FactForm ADV
Contact page urlSep 30, 2026Factno URL
Contact page urlSep 16, 2026Factno URL
DescriptionSep 30, 2026Factno URL
DescriptionSep 16, 2026Factno URL
DescriptionSep 12, 2026Factno URL
Employees8Aug 15, 2024FactForm ADV
HeadquartersArlington, VAAug 15, 2024FactForm ADV
Office addressAug 15, 2024FactForm ADV
Self-described typeVenture capital
“America’s Top Venture Capital Firms of 2026”
Sep 30, 2026Factno URL
Portfolio pageSep 30, 2026Factno URL
Portfolio pageSep 16, 2026Factno URL
Portfolio pageSep 12, 2026Factno URL
Private funds reported75Jul 28, 2026FactForm ADV
Private funds reported38Aug 15, 2024FactForm ADV
Private fund gross assets (reported)$3.5BJul 28, 2026FactForm ADV
Private fund gross assets (reported)$855MAug 15, 2024FactForm ADV
Regulatory AUM (adviser, not fund size)$855MAug 15, 2024FactForm ADV
Stated sectorsAI, enterprise software, healthcare, space, defense, logistics, industrial
“sector words on the home page”
Sep 30, 2026Factno URL
Stated sectorsEnterprise software, cybersecurity
“sector words on the home page”
Sep 16, 2026Factno URL
Stated sectorsEnterprise software, cybersecurity
“sector words on the home page”
Sep 12, 2026Factno URL
Team pageSep 30, 2026Factno URL
Team pageSep 16, 2026Factno URL
Team pageSep 12, 2026Factno URL
Venture funds reported0Jul 28, 2026FactForm ADV
Venture funds reported0Aug 15, 2024FactForm ADV
WebsiteAug 15, 2024FactForm ADV
Site titleSep 30, 2026Factno URL
Site titleSep 16, 2026Factno URL
Site titleSep 12, 2026Factno URL
How this is scored
Scores, classification basis and filing advisersCandidate, candidateShow
Importance
41
elevated
Active deployment
90
high
Emerging
0
low
Freshness
100
high
CandidateSEC registered investment adviser

No sworn venture fact yet (name or round mention only)

The inputs behind each score
importance
gav: $0 · funds: 1 · people: 0.56 · investments: 0.47 · scale basis: Venture-typed funds only (Candidate): 18 funds, $0M of $31M reported · co investors: 0.53
active deployment
investments 12m: 1 · fund raising 18m: 1 · people joined 12m: 0 · vintage within 3y: 1 · latest investment at: 2026-08-06
emerging manager
fund count: 19 · reported gav: $31.2M · first adv filing: 2020-07-10 · years since first filing: 6.2

Fits, record history and connections

scored matches for this investor, every identity change, every edge

Record history

1 identity change, 2 dated events on the change ledger, latest first
  • Merged in
    2026-09-13
  • Organization classification changed
    2026-09-24
  • Adviser's first ADV filing
    2020-07-10source

The ledger records every merge, rename and reclassification this record went through and the dated filings observed on it, so the identity on this page can be traced to the records it was built from. The ledger's own sentences name other records, so they show with the names.