Firms, funds, partners, companies and rounds from sworn filings, firm sites and announcements, kept as a graph with a date and a source on every edge. Facts, inferences and estimates are labelled as such. A fund target is never a close, GAV is never dry powder, and a round size is never an investor’s check.

Firms / Waterline Ventures, LLC

Waterline Ventures, LLC

Institutional venture firmCambridge, MAwaterlineventures.comSEC venture capital fund adviser

venture manager, reported GAV $257M across 6 vehicles

Importance
25
moderate
Active deployment
29
moderate
Emerging
0
low
Completeness
69
high
Freshness
100
high
Research priority
11
low
Identity and regulatory footprint
Headquarters
Cambridge, MAadviserinfo.sec.gov
Office address
44 BRATTLE STREET, 1ST FLOOR, Cambridge, MA, 02138adviserinfo.sec.gov
Business phone
857-574-9958adviserinfo.sec.gov
SEC adviser type
exempt reporting adviseradviserinfo.sec.gov
SEC exemption claimed
venture capital fund adviseradviserinfo.sec.govItem 2.B(1): advises solely venture capital funds
Latest Form ADV
Mar 2, 2026
Private funds reported
5 (5 venture capital funds)adviserinfo.sec.gov
Private fund gross assets
$257Madviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
business phone
857-574-9958adviserinfo.sec.govpublished by the subject
Stated thesis versus observed behaviour
1 observed deals
Stated (the firm’s website)
Sectors
ai, healthcare, biotech, space
Stages
series a, series b
Geography
new york
Check size
not stated; DFX does not estimate checks from round sizes
Observed (from deals on record)
Stage at participation
seed 100%
Stage at first entry
seed 100%
Sectors
unknown 100%
lead rate 0%follow-on rate 0%new logos, 12 months 1
Funds and vehicles
6 reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
Waterline Ventures IV, L.P.Fund2024 form d first saleEarly deployment$0
Mar 21, 2024
20$21.0M
of $50.0M
Feb 6, 2025
Waterline Ventures Nh, L.P.Fund2022 form d first saleActive deployment$2.3M
Mar 21, 2024
5$2.4M
of $2.4M
Mar 29, 2022
Waterline Ventures III, L.P.Fund2021 adv first reportedMature$231M
Mar 21, 2024
30$0Jun 10, 2020
Waterline Ventures II, L.P.Fund2020 adv first reportedMature$21.9M
Mar 21, 2024
29$0
of $15.0M
Sep 21, 2016
Waterline Ventures I-A LLCFeeder or parallel2015 form d first saleHarvest$500,000
May 1, 2015
1$500,000
of $500,000
Feb 3, 2015
Waterline Ventures I, L.P.FundunknownUnknown$1.7M
Mar 21, 2024
13$0
of $5.0M
Jul 31, 2014
GAV is the gross asset value the adviser reported on Form ADV for the vehicle, never the fund’s committed size and never dry powder. Form D sold is the amount sold as of the latest filing, never a final close.
Investment team
11 current, 0 departed
Investments on record
1 edges, 1 companies, 0 partner-attributed
CompanyRoundRolePartnerRound sizeThis investorDateSource
CVRD HealthSeed Round · Seedparticipantunknown$5.0MunknownMay 21, 2026Fact Press release wires (Business Wire, PR Newswire, GlobeNewswire public RSS)
“This investor” is the amount disclosed for this investor alone; it is unknown unless a source said it. The round size is the whole round.
Co-investors
2 relationships from shared deals, counted for the whole firm
Limited partners
0 disclosed
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.
Timeline
7 dated events
  1. Mar 21, 2024
    Waterline Ventures IV, L.P. first reported on Form ADV by Waterline Ventures, LLC (Venture Capital Fund)
  2. Mar 31, 2022
    Waterline Ventures Nh, L.P. first reported on Form ADV by Waterline Ventures, LLC (Venture Capital Fund), GAV $2,420,500
  3. Mar 29, 2021
    Waterline Ventures III, L.P. first reported on Form ADV by Waterline Ventures, LLC (Venture Capital Fund), GAV $20,443,554
  4. Mar 31, 2020
    Waterline Ventures II, L.P. first reported on Form ADV by Waterline Ventures, LLC (Venture Capital Fund), GAV $15,836,776
  5. May 1, 2015
    Waterline Ventures I-A LLC first reported on Form ADV by Waterline Ventures, LLC (Venture Capital Fund), GAV $500,000
  6. Oct 20, 2014
    Waterline Ventures, LLC first filed Form ADV (ERA, venture capital fund adviser exemption)
  7. Oct 20, 2014
    Waterline Ventures I, L.P. first reported on Form ADV by Waterline Ventures, LLC (Venture Capital Fund), GAV $5,250,000
Classification history
  1. Sep 12, 2026
    Institutional venture firm (confirmed, 95%, cls-1)
    venture manager, reported GAV $257M across 6 vehicles
Evidence
47 observations from 3 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
Why admittedvc_exemption,vc_funds_reportedMar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
SEC exemption claimedventure_capital_fund_adviserMar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
SEC exemption claimedventure_capital_fund_adviserMar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
SEC adviser typeexempt_reporting_adviserMar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
SEC adviser typeexempt_reporting_adviserMar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
First Form ADV filing2014-10-20Mar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Adv history loadedadv-hist-1Sep 12, 2026FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Latest Form ADV filing2026-03-02Mar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Latest Form ADV filing2024-03-21Mar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
SEC statusERA - ActiveMar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
SEC status effective2020-03-31Mar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Venture share of reported funds1Mar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Business phone857-574-9958Mar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Business phone857-574-9958Mar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
HeadquartersCambridge, MAMar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
HeadquartersCambridge, MAMar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Office address44 BRATTLE STREET, 1ST FLOOR, Cambridge, MA, 02138Mar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Office address44 BRATTLE STREET, 1ST FLOOR, Cambridge, MA, 02138Mar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Legal formLimited Liability CompanyMar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Legal formLimited Liability CompanyMar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Portfolio pagehttps://waterlineventures.com/portfolio/
0 entries read
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Portfolio pagehttps://waterlineventures.com/portfolio/
0 entries read
Sep 15, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Private funds reported5Mar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Private funds reported5Mar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Private fund gross assets (reported)$257MMar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Private fund gross assets (reported)$257MMar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Stated geographynew york
geography words on the home page
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated geographynew york
geography words on the home page
Sep 15, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated sectorsai,healthcare,biotech,space
sector words on the home page
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated sectorsai,healthcare,biotech,space
sector words on the home page
Sep 15, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated stagesseries_a,series_b
stage words on the home page
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated stagesseries_a,series_b
stage words on the home page
Sep 15, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Team pagehttps://waterlineventures.com/team/
10 name/title pairs read
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Team pagehttps://waterlineventures.com/team/
10 name/title pairs read
Sep 15, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Venture funds reported5Mar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Venture funds reported5Mar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
WebsiteHTTP://WWW.WATERLINEVENTURES.COMMar 2, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
WebsiteHTTP://WWW.WATERLINEVENTURES.COMMar 21, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Site titleWaterline Ventures
title tag
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Site titleWaterline Ventures
title tag
Sep 15, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)