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Frontier labs

Indicators

Venture flow

Frontier labs: primary-round equity by quartereach segment links to its first round's record
Form D filingsEpoch's compiled rounds

Primary-round equity per calendar quarter: Form D amount sold where the entity files, Epoch's press-compiled rounds where the entity has no filing in the same quarter or within 45 days. Amendments replace their originals; SPVs and secondaries are excluded; Form D debt is listed in the table, not drawn.

Derived (venture_dollars_by_source) from: Epoch AI data hub — AI companies; SEC EDGAR Form D (private offerings). Epoch AI, 'Data on AI Companies' (CC BY 4.0), epoch.ai/data. SEC EDGAR Form D data sets.

The numbers
quartersourcekinddollarsrecord
Q2 2026Epoch's compiled roundsequity$80.0Bestimate
Q1 2026Epoch's compiled roundsequity$152Breported
Q4 2025Epoch's compiled roundsequity$22.5Bestimate
Q4 2025Form D filingsequity$16.6Breported
Q3 2025Epoch's compiled roundsequity$21.3Bestimate
Q2 2025Form D filingsequity$5.3Breported
Q1 2025Epoch's compiled roundsequity$14.5Bestimate
Q1 2025Form D filingsequity$27.7Mreported
Q4 2024Epoch's compiled roundsequity$10.6Bestimate
Q4 2024Form D filingsequity$6.0Breported
Q2 2024Form D filingsequity$5.0Breported
Q1 2024Epoch's compiled roundsequity$4.8Bestimate
Q4 2023Epoch's compiled roundsequity$2.0Bestimate
Q4 2023Form D filingsequity$135Mreported
Q2 2023Epoch's compiled roundsequity$750Mestimate
Q1 2023Epoch's compiled roundsequity$10.0Bestimate

Entities · 7

EntityRoleSinceVerifiedLatest observation
Anthropicprimary—● yes43.8% · business_paid_share.m · 2026-09-30
Google DeepMindprimary—○ not yet6.2% · business_paid_share.m · 2026-08-31
Meta PlatformsCIK 0001326801primary—● yes$9.9B · net_income.q · 2026-09-30
OpenAIprimary—● yes40.6% · business_paid_share.m · 2026-09-30
xAICIK 0002079267primary—● yes4.1% · business_paid_share.m · 2026-09-30
Alphabet Inc.CIK 0001652044secondary—● yes$11.1B · cloud.operating_income.q · 2026-09-30
Scale AI
49% acquired by Meta in June 2025; human-data business continues.
secondary2025-06-01○ not yet1.00 score · signal.pt · 2025-06-12

Seed lists come from the capture brief and are verified against filings one by one. A name here is not a claim about size or funding until an observation attaches.