Anthropic Stakeholders

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  "title": "Anthropic Stakeholders",
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  "lastUpdated": "2026-03-12",
  "dateCreated": "2026-02-18",
  "llmSummary": "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.",
  "description": "Who owns Anthropic and how much: founders (2-3% each, \\$7.6-11.4B), strategic investors (Google 14%, Amazon significant minority), EA-aligned investors (Tallinn \\$2-6B, Moskovitz \\$3-9B), and employee equity pool (12-18%, \\$46-68B). At \\$380B Series G valuation (Feb 2026).",
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    {
      "text": "Fortune",
      "url": "https://fortune.com/2026/01/27/anthropic-billionaire-cofounders-ceo-dario-amodei-giving-away-80-percent-of-wealth-fighting-inequality-ai-revolution/",
      "resourceId": "fd8351a24e375eba",
      "resourceTitle": "Anthropic's billionaire co-founders are giving away 80% of their wealth"
    },
    {
      "text": "IPS",
      "url": "https://ips-dc.org/report-giving-pledge-at-15/",
      "resourceId": "3d8f5c8630d94337",
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    {
      "text": "EA Forum",
      "url": "https://forum.effectivealtruism.org/posts/rRBaP7YbXfZibSn3C/front-load-giving-because-of-anthropic-donors",
      "resourceId": "80e6d5c56dcf3705",
      "resourceTitle": "EA Forum, \"Front-load giving because of Anthropic donors\" (https://forum.effectivealtruism.org/posts/rRBaP7YbXfZibSn3..."
    },
    {
      "text": "Anthropic Careers",
      "url": "https://www.anthropic.com/careers",
      "resourceId": "4d2d026d3cca4d9d",
      "resourceTitle": "Anthropic careers"
    },
    {
      "text": "Anthropic",
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  "changeHistory": [
    {
      "date": "2026-02-19",
      "branch": "claude/enhance-fact-system-aOWsd",
      "title": "Enhanced Anthropic stakeholders table with HoverCards, entity previews, full-bleed layout",
      "summary": "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.",
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    },
    {
      "date": "2026-02-18",
      "branch": "claude/issue-294-HfAfF",
      "title": "PR polish + frontmatter update",
      "summary": "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.",
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    },
    {
      "date": "2026-02-18",
      "branch": "claude/highlight-stakeholder-table-VtY0t",
      "title": "Create dedicated Anthropic stakeholder page",
      "summary": "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).",
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      "duration": "~30min"
    },
    {
      "date": "2026-02-18",
      "branch": "enhance-fact-system-aOWsd",
      "title": "Enhance fact system on Anthropic stakeholders page",
      "summary": "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.",
      "model": "sonnet-4",
      "duration": "~30min"
    }
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No external links