Glasswing Ventures, LLC

Multi-stage venture firmSEC venture capital fund adviser· Boston, MassachusettsGLASSWING.VC

Glasswing Ventures invests in early-stage AI-native and Frontier Tech companies transforming enterprise B2B and cybersecurity markets.

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

Reported fund assets
$569M
sum of its funds' Form ADV filings, last 30 months
New companies, 12 mo
4
Investment team
29
Latest vintage
2024
Contact decision makers
More
Ask DFX about thisView relationshipsFind contactsInvestments (83)Team (68)Funds
As of · the latest observation of this organization; filed figures are as of its latest Form ADV

66 additional team members, 37 additional co-investors and affiliates, 87 additional investments, funds and LPs, 8 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. 4 companies
    new in 12 months

    4 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 →
  2. 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 5 Aug 2026 ($3.4M sold on Form D).

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

    FactSEC Form D filingsFor Co-investors, LPs, lendersInvestments →

People to know

View all people
  • Rick Grinnell
    Founder and Managing Partner
    Why: Managing partner: runs the firm
    No route on file yet
  • Rudina Seseri
    Managing Partner
    Why: Managing partner: runs the firm
    No route on file yet
  • Barbara Piette
    Founder & Partner, Avoca Partners
    Why: Founder of the firm
    No route on file yet

Relationship network

204 connected entities4 observed rounds1 dated round shown here, 2025

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.

Darker lines were active in the last 24 months or are current; lighter lines are older or undated.

How am I connected?

Name your firm, a company or a person, and DFX finds the published routes to Glasswing Ventures, LLC: 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 Glasswing Ventures, LLC

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

Investing

83 companies on record, 4 new in 12 months
Investments on record
83 companies, 4 partner-attributed
CompanyRoundRolePartnerRound sizeThis investorDateSource
Provenancexlportfolio listingunknownunknownunknownunknownOct 1, 2026Fact Company website
atlasdiscovery.bioportfolio listingunknownunknownunknownunknownSep 30, 2026Fact Firm website
beacon.devportfolio listingunknownunknownunknownunknownSep 30, 2026Fact Firm website
Stated thesis versus observed behaviour
86 observed deals
Stated (the firm’s website)
Sectors
ai, enterprise software, deep tech
Stages
seed, series a, series b, early
Geography
boston, global
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 50%series b 50%
Stage at first entry
seed 50%series b 50%
Industries, each company once
Hardware and deep tech, Software or Tech-enabled and IT services (3)
lead rate 33%follow-on rate 0%new companies, 12 months 4

Team

68 current, 3 departed
Decision makers
who to call first, and why; then everyone else by function
  • Rick Grinnell · Founder and Managing Partner
    Why this person: Managing partner: runs the firm; Named with investment responsibility
  • Rudina Seseri · Managing Partner
    Why this person: Managing partner: runs the firm; Named with investment responsibility
  • Barbara Piette · Founder & Partner, Avoca Partners
    Why this person: Founder of the firm; Named with investment responsibility

Ranked by the role the firm or its filing states, a route on file and deals led. Every reason is read from the record, never inferred. Routes are published by the person or the firm (their bio, the team page or a filing) and are revealed on a plan; data bought from a provider is never shown, and a route printed at a firm the person has since left is held back.

Investment team
68 current, 3 departed
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

10 vehicles, 0 LPs disclosed
Funds and vehicles
10 reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
Glasswing Ventures III, L.P.Fund2024 form d first saleEarly deployment$195M
Mar 25, 2026
174$203M
of $203M
Feb 4, 2026
Glasswing Ventures TN, L.P.Fund2024 form d first saleNewly closed$1.8M
Mar 25, 2026
1$1.8M
of $1.8M
Jan 28, 2025
Glasswing Ventures Inr, L.P.Fund2022 form d first saleActive deployment$2.6M
Mar 25, 2026
1$2.5M
of $2.5M
Jul 8, 2022
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

48 co-investors · on 1 other DFX graph
Co-investors
48 counted from shared deals, for the whole firm
Across DFX and the capital chainon 1 other DFX graph Show
Across DFX
  • The same institution is held on RIA and Wealth, matched by identifier. See which records
Across the graphs

Glasswing Ventures, LLC is the same institution as 1 record in RIA and Wealth.

RIA and Wealth1

The joined record opens with the product, beside every other relationship on this page.

Checking your plan…

Evidence and history

13 dated events, 68 observations from 4 sources
Timeline
13 dated events
  1. Mar 25, 2026
    Glasswing Ventures Tn, L.P. first reported on Form ADV by Glasswing Ventures, LLC (Venture Capital Fund), GAV $1,805,505
    Fund first reported on Form ADVFundsInferenceGlasswing Ventures TN, L.P.Form ADV
  2. Mar 25, 2026
    Glasswing Ventures Special Growth Opportunities Fund, L.P. first reported on Form ADV by Glasswing Ventures, LLC (Venture Capital Fund), GAV $6,544,302
    Fund first reported on Form ADVFundsInferenceGlasswing Ventures Special Growth Opportunities Fund, L.P.Form ADV
  3. Mar 25, 2026
    Glasswing Ventures III, L.P. first reported on Form ADV by Glasswing Ventures, LLC (Venture Capital Fund), GAV $195,343,089
    Fund first reported on Form ADVFundsInferenceGlasswing Ventures III, L.P.Form ADV
  4. Feb 24, 2023
    Glasswing Ventures Inr, L.P. first reported on Form ADV by Glasswing Ventures, LLC (Venture Capital Fund), GAV $2,652,370
    Fund first reported on Form ADVFundsFactGlasswing Ventures Inr, L.P.Form ADV
  5. Mar 21, 2022
    Glasswing Ventures Bk, L.P. first reported on Form ADV by Glasswing Ventures, LLC (Venture Capital Fund), GAV $714,915
    Fund first reported on Form ADVFundsFactGlasswing Ventures Bk, L.P.Form ADV
Identity and regulatory footprint
Address, phone, Form ADV filing and ownersForm ADV filed Mar 25, 2026 · 10 private fundsShow
Headquarters
Boston, MAadviserinfo.sec.gov
Office address
unknownadviserinfo.sec.gov
Business phone
unknownadviserinfo.sec.gov
Website
GLASSWING.VC
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 25, 2026
Private funds reported
10 (10 venture capital funds)adviserinfo.sec.gov
Private fund gross assets, adviser total
$569Madviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
Classification history
Every classification this record has carried2 on recordShow
  1. Sep 23, 2026
    Multi-stage venture firm (confirmed, 95%)
    Both early and growth/opportunity families, reported GAV $569M
  2. Sep 12, 2026
    Multi-stage venture firm (confirmed, 95%)
    Both early and growth/opportunity families, reported GAV $317M
Evidence
76 observations from 4 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
Why admittedVC exemption, VC funds reportedMar 25, 2026FactForm ADV
SEC exemption claimedVenture capital fund adviserMar 25, 2026FactForm ADV
SEC exemption claimedVenture capital fund adviserMar 22, 2024FactForm ADV
SEC adviser typeExempt reporting adviserMar 25, 2026FactForm ADV
SEC adviser typeExempt reporting adviserMar 25, 2026FactForm ADV
SEC adviser typeExempt reporting adviserMar 22, 2024FactForm ADV
First Form ADV filing2016-08-26Mar 25, 2026FactForm ADV
First Form ADV filing2016-08-26Mar 22, 2024FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-29Sep 30, 2026FactForm 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 filing2026-03-25Mar 25, 2026FactForm ADV
Latest Form ADV filing2026-03-25Mar 25, 2026FactForm ADV
Latest Form ADV filing2024-03-22Mar 22, 2024FactForm ADV
SEC statusERA - ActiveMar 25, 2026FactForm ADV
SEC status effective2016-08-26Mar 25, 2026FactForm ADV
Venture share of reported funds1Mar 25, 2026FactForm ADV
Venture share of reported funds1Mar 22, 2024FactForm ADV
Business phoneMar 25, 2026FactForm ADV
Business phoneMar 22, 2024FactForm ADV
DescriptionSep 30, 2026Factno URL
DescriptionSep 16, 2026Factno URL
DescriptionSep 13, 2026Factno URL
HeadquartersBoston, MAMar 25, 2026FactForm ADV
HeadquartersBoston, MAMar 22, 2024FactForm ADV
Office addressMar 25, 2026FactForm ADV
Office addressMar 22, 2024FactForm ADV
Self-described typeVenture capitalSep 30, 2026Factno URL
Self-described typeVenture capitalSep 16, 2026Factno URL
Self-described typeVenture capitalSep 13, 2026Factno URL
Legal formLimited Liability CompanyMar 25, 2026FactForm ADV
Legal formLimited Liability CompanyMar 22, 2024FactForm ADV
Portfolio pageSep 30, 2026Factno URL
Portfolio pageSep 16, 2026Factno URL
Portfolio pageSep 13, 2026Factno URL
Private funds reported10Mar 25, 2026FactForm ADV
Private funds reported10Mar 25, 2026FactForm ADV
Private funds reported7Mar 22, 2024FactForm ADV
Private fund gross assets (reported)$569MMar 25, 2026FactForm ADV
Private fund gross assets (reported)$569MMar 25, 2026FactForm ADV
Private fund gross assets (reported)$317MMar 22, 2024FactForm ADV
Schedule a diffsadiff-1Mar 25, 2026FactForm ADV
Stated geographyBoston, global
“geography words on the home page”
Sep 30, 2026Factno URL
Stated geographyBoston, global
“geography words on the home page”
Sep 16, 2026Factno URL
Stated geographyBoston, global
“geography words on the home page”
Sep 13, 2026Factno URL
Stated sectorsAI, enterprise software, deep tech
“sector words on the home page”
Sep 30, 2026Factno URL
Stated sectorsAI, enterprise software, deep tech
“sector words on the home page”
Sep 16, 2026Factno URL
Stated sectorsAI, enterprise software, deep tech
“sector words on the home page”
Sep 13, 2026Factno URL
Stated stagesSeed, series a, series b, early
“stage words on the home page”
Sep 30, 2026Factno URL
Stated stagesSeed, series a, series b, early
“stage words on the home page”
Sep 16, 2026Factno URL
Stated stagesSeed, series a, series b, early
“stage words on the home page”
Sep 13, 2026Factno URL
Team pageSep 30, 2026Factno URL
Team pageSep 16, 2026Factno URL
Team pageSep 13, 2026Factno URL
Venture funds reported10Mar 25, 2026FactForm ADV
Venture funds reported10Mar 25, 2026FactForm ADV
Venture funds reported7Mar 22, 2024FactForm ADV
WebsiteMar 22, 2024FactForm ADV
Site titleSep 30, 2026Factno URL
Site titleSep 16, 2026Factno URL
Site titleSep 13, 2026Factno URL
How this is scored
Scores, classification basis and filing advisersMulti-stage venture firm, confirmedShow
Importance
71
high
Active deployment
40
elevated
Emerging
0
low
Freshness
100
high
Multi-stage venture firmSEC exempt reporting adviser

Both early and growth/opportunity families, reported GAV $569M

The inputs behind each score
importance
gav: $1 · funds: 0.83 · people: 1 · investments: 0.72 · co investors: 0.68
active deployment
investments 12m: 0.5 · fund raising 18m: 0 · people joined 12m: 0 · vintage within 3y: 1 · latest investment at: 2026-08-20
emerging manager
fund count: 10 · reported gav: $569M · first adv filing: 2016-08-26 · years since first filing: 10.1

Fits, record history and connections

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

Record history

1 dated event on the change ledger, latest event first
  • Adviser's first ADV filing
    2016-08-26source on record

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.