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Updated 2026-03-12HistoryData
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Summary

Consolidated ownership table for Anthropic at \$380B valuation (Series G, Feb 2026). Seven co-founders hold 2-3% each (\$7.6-11.4B per founder, \$53-80B total). Google owns ~14% (\$53B), Amazon holds a significant minority stake (\$10.75B invested). EA-aligned investors Jaan Tallinn (0.6-1.7%, \$2-6B) and Dustin Moskovitz (0.8-2.5%, \$3-9B) are early backers. Employee equity pool is 12-18% (\$46-68B), with early employees under a historical 3:1 matching program that has been reduced to 1:1 at 25% for new hires. Total EA-aligned capital: \$27-76B risk-adjusted. Series G investors include GIC, Coatue, D.E. Shaw Ventures, Dragoneer, Founders Fund, ICONIQ, MGX, and 10+ institutional co-investors.

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Change History4
Enhanced Anthropic stakeholders table with HoverCards, entity previews, full-bleed layout3 weeks ago

Multi-round enhancement of the Anthropic stakeholders page. Session 1: added 5 canonical facts, refactored table into server+client split, column toggles, pledge ranges. Session 2: replaced FactRef hash badges with Radix HoverCard popovers on values (interactive, stays open); added EntityPreviewLink hover cards on stakeholder names; added live valuation input so users can recalculate at custom valuations; added `contentFormat: table` + `hideSidebar: true` to hide left sidebar and give table full container width; added `prose-constrain-text` CSS to keep text at 65rem while table component uses full 90rem container; fixed EA connections (Chris Olah and Jack Clark upgraded to "Moderate"; Tom/Jared/Sam updated to "Weak/unknown" with reasoning); added Methodology & Assumptions section explaining how all estimates were derived.

sonnet-4-6 · ~2h (two sessions)

PR polish + frontmatter update#2953 weeks ago

Updated PR #295 description to check off the already-satisfied CI lint item and annotate remaining test plan items as human-action-required. Updated `anthropic-stakeholders.mdx` frontmatter: raised `readerImportance` and `researchImportance` to 85, set `update_frequency` to 14 days. Ran full gate check (7/7 passed). Marked issue #294 done.

sonnet-4 · ~15min

Create dedicated Anthropic stakeholder page3 weeks ago

Created a new dedicated `anthropic-stakeholders` page with the most shareable ownership tables (all stakeholders with stakes, values, EA alignment), added a condensed stakeholder summary to the top of the main Anthropic page, and wrote 4 proposed GitHub issues for broader system changes (datasets infrastructure, importance metrics rethink, concrete data expansion, continuous maintenance).

opus-4-6 · ~30min

Enhance fact system on Anthropic stakeholders page3 weeks ago

Added 8 new canonical facts to `data/facts/anthropic.yaml` (Google stake %, Google/Amazon investments, founder equity totals, EA-aligned capital range), a new `equity-stake-percent` measure, and built a programmatic `AnthropicStakeholdersTable` React component with derived "Exp. Donated" and "Exp. EA-Effective" columns that auto-scale with the current valuation fact. Updated the MDX page to use `<F>` components for volatile inline figures.

sonnet-4 · ~30min

Issues2
QualityRated 60 but structure suggests 87 (underrated by 27 points)
Links7 links could use <R> components

Anthropic Stakeholders

Data as of February 2026

All values at $380 billion post-money valuation (Anthropic Series G, Feb 2026). For detailed analysis of EA-aligned capital flows, see Anthropic (Funder). For valuation scenarios, see Anthropic Valuation Analysis.

Stakeholder Ownership & Philanthropy

The table below shows each stakeholder's estimated equity stake, the fraction pledged to charitable giving ("Pledge %"), the estimated probability those donations go to EA-aligned causes ("EA Align %"), and two derived columns: expected donated dollars and expected EA-effective giving. All values scale automatically with the current valuation.

Anthropic Stakeholder Ownership & Philanthropyas of 2026-02

Dollar values at $380B valuation. Pledge % = fraction of equity pledged to charity. EA Align % = estimated probability donations go to EA-aligned causes.

Columns:
Adjust valuation:
StakeholderCategoryEst. StakeValue at $380BPledge %EA Align %Exp. DonatedExp. EA-Effective
Dario AmodeiForbes estimates ~$7B net worth at $380B valuation → ~1.8% implied; range accounts for different share classes and vestingCo-founder1.5–2.5%$5.7B–$9.5B80%80–90% · Very high$4.6B–$7.6B$3.6B–$6.8B
Daniela AmodeiCo-founder and President; likely comparable stake to Dario based on co-founder roleCo-founder1.5–2.5%$5.7B–$9.5B80%80–90% · Very high$4.6B–$7.6B$3.6B–$6.8B
Chris OlahNon-CEO co-founder; likely smaller initial allocation than Dario/DanielaCo-founder1–2%$3.8B–$7.6B80%40–60% · Medium$3.0B–$6.1B$1.2B–$3.6B
Jack ClarkCo-founder1–2%$3.8B–$7.6B80%30–50% · Medium$3.0B–$6.1B$0.9B–$3.0B
Tom BrownCo-founder1–2%$3.8B–$7.6B80%15–30% · Low$3.0B–$6.1B$0.5B–$1.8B
Jared KaplanChief Scientist; may have larger founder allocationCo-founder1–2%$3.8B–$7.6B80%15–30% · Low$3.0B–$6.1B$0.5B–$1.8B
Sam MccandlishCo-founder1–2%$3.8B–$7.6B80%15–30% · Low$3.0B–$6.1B$0.5B–$1.8B
Jaan TallinnLed Series A; $100M+ invested across AI companies. Range reflects dilution across 15+ subsequent rounds.Early investor0.6–1.7%$2.3B–$6.5B90%90–95% · Very high$2.1B–$5.8B$1.8B–$5.5B
Dustin Moskovitz$500M stake transferred to nonprofit vehicle (Good Ventures)Early investor0.8–2.5%$3.0B–$9.5B95%90–95% · Very high$2.9B–$9.0B$2.6B–$8.6B
Employee equity poolAggregate; includes vested/unvested options and RSUs. Equity donation matching at 3:1 ratio (up to 50% pre-2025, 25% post-2024).Employees12–18%$45.6B–$68.4B25–50%40–70% · Medium$11.4B–$34.2B$4.6B–$23.9B
Google~14% per DCD reporting (Dec 2024). Total equity investment ~$3.3B across 3 rounds.Strategic investor13–15%$49.4B–$57.0B
AmazonQ1 2025: stake valued at $13.8B at ~$183B valuation (~7.5%). Convertible notes partially converted. Equity capped at <33%.Strategic investor6–10%$22.8B–$38.0B
Microsoft AIUp to $5B equity investment announced Nov 2025; exact converted stake TBDStrategic investorUndisclosed
NVIDIAUp to $10B equity investment announced Nov 2025; exact converted stake TBDStrategic investorUndisclosed
Other institutionalSpark Capital, Menlo Ventures, Lightspeed, ICONIQ, Fidelity, GIC, Coatue, D.E. Shaw, Dragoneer, Founders Fund, MGXInstitutionalUndisclosed
Totals (pledged stakeholders)$40.7B–$94.6B$19.8B–$63.9B

Ranges reflect uncertainty. Pledges are not legally binding.

Total funding raised: $67 billion across 17 rounds. Current valuation: $380 billion (as of Feb 2026) (Series G).

Founder Donation Pledges

All seven co-founders have pledged to donate 80% of their equity. Fortune At current valuations, that's $43–64B if fully honored — derived from $53–80B in combined founder equity.

FounderEA ConnectionPledge Fulfillment Likelihood
Dario AmodeiStrong — GWWC signatory, early GiveWell supporter, former roommate of Holden KarnofskyHigh
Daniela AmodeiStrong — married to Holden Karnofsky (GiveWell co-founder, now at Anthropic)High
Chris OlahModerate — interpretability pioneer; has participated in EA events; work closely aligned with EA safety prioritiesMedium
Jack ClarkModerate — responsible AI advocate; founded Import AI newsletter; EA-adjacent framing in policy workMedium
Tom BrownWeak/unknown — GPT-3 lead author; chose Anthropic's safety mission; no documented EA pledgeLow-Medium
Jared KaplanWeak/unknown — scaling laws pioneer; safety-motivated co-founder; no documented EA pledgeLow-Medium
Sam McCandlishWeak/unknown — alignment researcher; no publicly documented EA connectionsLow-Medium

Only 2 of 7 founders have documented strong EA connections. The remaining 5 all chose to leave OpenAI specifically to found a safety-focused lab, suggesting at minimum EA-adjacent motivations — but no documented pledges or EA Forum activity for Brown, Kaplan, and McCandlish. Founder pledges are not legally binding — enforcement relies on reputational cost. Historical Giving Pledge data shows only 36% of deceased pledgers met their commitment. IPS

EA-Aligned Capital Summary

SourceGross ValueRisk-Adjusted ValueReliability
Strongly EA-aligned founders (Dario, Daniela)$11-17B$6-12BPledge-dependent
Safety-focused founders (Olah, Clark)$11-17B$3-8BUncertain cause direction
Non-EA founders (Brown, Kaplan, McCandlish)$17-25B$2-7BUnlikely EA
Jaan Tallinn$2-6B$1.4-5.4BVery high (>90%)
Dustin Moskovitz$3-9B$2.7-9BCertain (already committed)
Employee pledges + matching$20-40B$16-38BLegally bound (in DAFs)
Non-pledged EA employees≈$2B$0.4-0.8BModerate
Total$66-116B$27-76B

Employee capital in donor-advised funds ($27–76B risk-adjusted) is the most reliable source — legally bound, though donors retain discretion over which charities receive grants. The historical 3:1 matching program (employees pledge up to 50%, Anthropic matches 3x) has been reduced to 1:1 at 25% for employees hired after 2024. EA Forum Anthropic Careers

Funding Timeline

Funding History
17 entries
DateRaisedValuationLead InvestorNotes
Jan 2021Company incorporation; initial equity allocation to 7 co-founders. ~60-70% total equity to founders pre-dilution.
Jan 2021Tallinn, Moskovitz, Eric SchmidtSeed round; amount undisclosed (estimated $10-30M based on typical AI startup seeds of this era). Seed investors named in Series A announcement.
May 2021$124 million$550 millionJaan TallinnJaan Tallinn led, Dustin Moskovitz and Eric Schmidt participated. ~22.5% dilution ($124M / $550M post-money).
Apr 2022$580 million$4 billionspark-capitalLed by Spark Capital. ~14.5% dilution.
Apr 2022$500 millionFTXPart of $580M Series B led by SBF. FTX held ~8% stake; sold in bankruptcy for ~$884M in March 2024 to 24 institutional investors (Jane Street, Fidelity, etc.). FTX estate's most profitable asset.
Feb 2023$300 milliongoogleInitial Google investment for ~10% stake. Reported February 2023. Included Google Cloud partnership.
May 2023$450 million$4.1 billionLed by Spark Capital
Sep 2023$1.3 billionamazonFirst tranche of up-to-$4B commitment. Convertible note structure; equity capped at <33%. AWS becomes primary cloud and training partner.
Oct 2023$2 billiongooglePart of up-to-$2B commitment; board observer seat. Largest single Google tranche.
Mar 2024$2.8 billionamazonCompleting initial $4B commitment. Convertible notes; partially converted to equity in Q1 2025.
Feb 2024$750 million$18.4 billionmenlo-venturesLed by Menlo Ventures. Talks reported Dec 2023; closed Feb 2024. ~4.1% dilution.
Nov 2024$4 billionamazonBrings total Amazon investment to $8B. Convertible notes.
Jan 2025$1 billiongoogleBrings total Google equity investment to ~$3.3B; current stake ~14%
Mar 2025$3.5 billion$61.5 billionlightspeedLed by Lightspeed Venture Partners. ~5.7% dilution.
Sep 2025$13 billion$183 billioniconiqLed by ICONIQ, Fidelity, Lightspeed. ARR had reached $4B. ~7.1% dilution.
Nov 2025$15 billionMicrosoft up to $5B equity + Nvidia up to $10B equity. Tied to $30B Azure compute purchase and 1GW Nvidia compute commitment. Makes Claude available on all 3 major clouds. Valuation ~$350B.
Feb 2026$30 billion$380 billiongicLed by GIC and Coatue; co-leads D.E. Shaw Ventures, Dragoneer, Founders Fund, ICONIQ, MGX. Second-largest venture deal ever. ARR ~$14B.

Total raised: $67 billion across 17 rounds. Anthropic

Google has invested $3.3B across 3 rounds for approximately ~14% of equity. Amazon has invested $10.75B and serves as Anthropic's primary cloud partner; its exact stake is undisclosed.

Capital Deployment Timeline

SourceEarliestPeak FlowStatus
Employee DAFs2025-20262027-2030Already transferring
Moskovitz2026-20272027-2030$500M in nonprofit vehicle
Tallinn2027-20282028-2032Likely post-IPO
Founders2028-20302030-2040Depends on IPO + pledge timing

IPO expected 2026-2027 (Kalshi: 72% chance Anthropic IPOs before OpenAI). Lock-up periods typically delay capital 6-12 months post-IPO. See Anthropic IPO.

Methodology & Assumptions

All figures in this table are estimates with significant uncertainty. Key assumptions:

Equity stakes:

  • Founders (2–3% each): Estimated from reported total founder equity (~14–21% for 7 co-founders). No individual founder stakes have been publicly disclosed; range reflects typical dilution across 7 people with differential contributions.
  • Google (~14%): Derived from Google's $3.3B total investment and Anthropic's $18B Series D valuation; cross-checked against Bloomberg reporting.
  • Tallinn (0.6–1.7%), Moskovitz (0.8–2.5%): Estimated from Series A lead position and subsequent dilution; no public disclosures.
  • Employee pool (12–18%): Typical early-stage AI lab employee equity range; diluted from founding allocations through Series G.

Pledge rates:

  • Founders (80%): Documented in Fortune reporting on the public pledge announcement.
  • Employee pool (25–50%): Lower bound from current 1:1 matching at 25% for post-2024 hires; upper bound from historical 3:1 matching program at 50% for pre-2025 hires. See EA Forum.
  • Tallinn (90%), Moskovitz (95%): Based on documented giving track records and explicit commitments.

EA alignment estimates (most uncertain column):

  • Based on: public statements, organizational affiliations, EA Forum activity, documented giving patterns, and whether donations have gone to EA-identified causes.
  • Dario/Daniela: GWWC signatories with documented EA community ties → 80–90%.
  • Chris Olah: Interpretability work is core EA-aligned; EA event participation → 40–60%.
  • Jack Clark: EA-adjacent responsible AI framing, less documented EA cause alignment → 30–50%.
  • Brown/Kaplan/McCandlish: Safety motivation for founding Anthropic but no documented EA cause preferences → 15–30%.
  • Employee pool: Blended estimate across a population with high EA representation at senior levels → 40–70%.

These are Fermi estimates for planning purposes, not verified figures. The "EA-Effective" column represents expected value and should be treated with wide error bars.

  • Anthropic (Funder) — Full analysis of EA-aligned capital, Squiggle models, and scenario analysis
  • Anthropic — Company overview, products, safety research
  • Anthropic Valuation Analysis — Valuation scenarios and competitive positioning
  • Anthropic IPO — IPO timeline and liquidity analysis
  • Pre-IPO DAF Transfers — Tax optimization and DAF mechanics
  • Founder Pledge Interventions — Interventions to increase pledge fulfillment

References

6Anthropic careersAnthropic
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