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Firm & fund profile / Sourced portfolio

Greylock

Tracked participation in 4 Atlas companies, with 1 explicitly attributed lead.

Firm website ↗

4portfolio companies

10round participations

1lead positions

$5.1Mled round total

Conviction

Most recent leads

The latest rounds this investor is sourced as leading, newest first.

Dec 2023BraintrustSeed$5.1M

Capital activity

Portfolio

CompanyLatest valuationFirst → latestRoundsRoleAttributed partner

CCognition$48BSep 2026 → Sep 20261 roundParticipant—

BBaseten$13BSep 2025 → Jun 20265 roundsParticipant—

BBraintrust$800MDec 2023 → Feb 20263 rounds1 ledSaam Motamedi

LLlamaIndex—Mar 2025 → Mar 20251 roundParticipant—

DateCompanyRoundRaisedValuationRoleEvidence

Sep 08, 2026CCognitionSeries E$2B$48BParticipant

Jun 22, 2026BBasetenSeries F$1.5B$13BParticipant

Feb 25, 2026BBasetenSeries C$75M—Participant

Feb 17, 2026BBraintrustSeries B$80M$800MParticipant

Feb 05, 2026BBasetenSeries E$300M$5BParticipant

Sep 05, 2025BBasetenSeries D$150M—Participant

Mar 04, 2025LLlamaIndexSeries A$19M—Participant

Oct 08, 2024BBraintrustSeries A$36M—Participant

Dec 13, 2023BBraintrustSeed$5.1M—Lead · Saam Motamedi

UndatedBBasetenSeries B$40M—Participant

DateCompanyRoundRaisedValuationRoleEvidence

Sep 08, 2026CCognitionSeries E$2B$48BParticipant

Jun 22, 2026BBasetenSeries F$1.5B$13BParticipant

Feb 05, 2026BBasetenSeries E$300M$5BParticipant

Sep 05, 2025BBasetenSeries D$150M—Participant

Feb 17, 2026BBraintrustSeries B$80M$800MParticipant

Feb 25, 2026BBasetenSeries C$75M—Participant

UndatedBBasetenSeries B$40M—Participant

Oct 08, 2024BBraintrustSeries A$36M—Participant

Mar 04, 2025LLlamaIndexSeries A$19M—Participant

Dec 13, 2023BBraintrustSeed$5.1M—Lead · Saam Motamedi