Build a chronological table of every priced Anthropic equity round from the Series A…

Anthropic has eight named priced equity rounds from Series A through Series H. The company itself published post-money valuations only from Series E onward. Earlier prices come from press, and Amazon/Google’s large checks were mostly convertibles that converted into later priced rounds rather than standalone priced financings. As of October 3, 2026, Series H (May 28, 2026) is the last priced equity round the company has announced. It confidentially filed a draft S-1 on June 1, 2026; that is not a priced round.

Anthropic PBC has not filed its own Form Ds for these rounds. Terms below are from Anthropic blog posts where noted, otherwise from press. Simple pre-money equals stated post-money minus stated amount raised, which is valid only if the full amount is new primary capital included in the post-money figure. Series G and H explicitly fold in previously committed strategic money, so that subtraction overstates “new” cash.

Priced equity rounds

Round	Announced	Close	Amount	Pre-money	Post-money	Lead / participants	Source quality
Series A	May 28, 2021	Not separately disclosed; company announced the raise that day	$124M	Not disclosed	Not disclosed by the company	Lead: Jaan Tallinn. Named: James McClave, Dustin Moskovitz, Center for Emerging Risk Research, Eric Schmidt, “and others”	Anthropic press release. No valuation in the release.
Series B	Apr 29, 2022	Not separately disclosed	$580M	Not disclosed by the company. Court-record math implies roughly ~$3.1B if SBF’s $500M was 13.56% post-round (see discrepancies)	Not disclosed by the company. Implied ~$3.7B from that stake, not a company figure	Lead: Sam Bankman-Fried (FTX). Named: Caroline Ellison, Jim McClave, Nishad Singh, Jaan Tallinn, Center for Emerging Risk Research	Anthropic press release for amount and investors. Valuation is not company-disclosed.
Series C	May 23, 2023	Announced as raised that day	$450M	Not disclosed	Not disclosed by the company. Press put the round at above $4B / about $4.1B	Lead: Spark Capital (Yasmin Razavi joined the board). Company-named: Google, Salesforce Ventures, Sound Ventures, Zoom Ventures, “and others.” VentureBeat also named Menlo Ventures	Anthropic press release for amount and named investors. Valuation is press only; company declined to confirm.
Series D	In market from Dec 20–21, 2023	No company announcement. NYT (Feb 20, 2024) said Menlo closed $750M “this month.” FT (Mar 27, 2024) still described a VC close expected in April	$750M (press)	Press conflict: $15B excluding the round (The Information, Dec 20, 2023) vs $18.4B pre-round (Reuters, Dec 21, 2023, citing its own source)	Press conflict: ~$15B after the round (NYT, three people) vs ~$18–18.4B in Forbes and later retrospectives. Treat as unresolved, roughly $15–19B	Lead: Menlo Ventures, largely via SPV “Menlo Inflection AI Partners” (Forbes: ~$500M via the SPV, ~$250M from Menlo funds and insiders). Lightspeed has said it invested in the Series D. Forbes reported Google’s convertible tranche was set to convert into this round; Spark had pro-rata	Press only (The Information, Reuters, Forbes, NYT, FT). No Anthropic release found.
Series E	Mar 3, 2025	Company and Bloomberg described it as closed that day	$3.5B	$58.0B (implied: $61.5B − $3.5B)	$61.5B	Lead: Lightspeed Venture Partners ($1B, per Bloomberg, citing Anthropic). Company-named: Bessemer, Cisco Investments, D1 Capital Partners, Fidelity Management & Research, General Catalyst, Jane Street, Menlo Ventures, Salesforce Ventures, “among other new and existing investors”	Anthropic press release for amount, post-money, and investors. Lightspeed check size is Bloomberg. Upsized: originally aimed at about $2B (Bloomberg; SiliconANGLE).
Series F	Sep 2, 2025 (“has completed”)	WSJ (Sep 10, 2025) placed Iconiq’s lead investment in August 2025; public announcement was Sep 2	$13B	$170B (implied, and the figure FT used in its headline)	$183B	Lead: ICONIQ. Co-leads: Fidelity Management & Research, Lightspeed. Company-named: Altimeter, Baillie Gifford, affiliated BlackRock funds, Blackstone, Coatue, D1, General Atlantic, General Catalyst, GIC, Growth Equity at Goldman Sachs Alternatives, Insight Partners, Jane Street, Ontario Teachers’ Pension Plan, Qatar Investment Authority, TPG, T. Rowe Price Associates, T. Rowe Price Investment Management, WCM, XN	Anthropic press release. Upsized: FT said Anthropic originally sought about $5B; TechCrunch cited earlier reports of $3–5B at a $170B valuation.
Series G	Feb 12, 2026	Company announced the raise that day. Process ran from early January; FT (Jan 27) said an initial $10–15B would lock in around Jan 27, with the rest in following weeks	$30B post-money headline	$350B (FT explicitly; also $380B − $30B)	$380B	Leads: GIC and Coatue. Co-leads: D. E. Shaw Ventures, Dragoneer, Founders Fund, ICONIQ, MGX. Company-named: Accel, Addition, Alpha Wave Global, Altimeter, AMP PBC, Appaloosa, Baillie Gifford, Bessemer, BlackRock-affiliated funds, Blackstone, D1, Fidelity, General Catalyst, Greenoaks, Goldman Sachs Alternatives growth equity, Insight, Jane Street, JPMorganChase (Security and Resiliency Initiative and Growth Equity Partners), Lightspeed, Menlo, Morgan Stanley Investment Management, NX1, QIA, Sands Capital, Sequoia, Temasek, TowerBrook, TPG, Whale Rock, XN. Includes a portion of previously announced Microsoft and NVIDIA investments	Anthropic press release for final terms. Path to those terms is WSJ, FT, Bloomberg. Marked upsize / extension (below).
Series H	May 28, 2026	Company said it “has raised” the round that day. Last priced round as of Oct 3, 2026	$65B	$900B (implied: $965B − $65B). Matches Bloomberg’s May 13 report of talks at more than $900B excluding new capital	$965B	Leads: Altimeter, Dragoneer, Greenoaks, Sequoia. Co-leads: Capital Group, Coatue, D1, GIC, ICONIQ, XN. Company-named: AMP PBC, Baillie Gifford, Blackstone, Brookfield, D. E. Shaw Ventures, DST Global, Fidelity, General Catalyst, Insight, Jane Street, Lightspeed, MGX, NTTVC, NX1, Situational Awareness LP, T. Rowe Price Associates, T. Rowe Price Investment Management, Temasek, plus Micron, Samsung, and SK hynix. Includes $15B of previously committed hyperscaler money, including $5B from Amazon	Anthropic press release. Upsize path is TechCrunch and Bloomberg.

Where sources disagree, and which closes were upsized

Series A valuation is not a company number. Stock-data sites put post-money anywhere from about $550M to about $845M (Dealroom has cited $845M; Forge-linked secondary data has been cited around $623M). Anthropic never confirmed a price. Do not use those figures as round terms.

Series B price is inferential. Business Insider, citing court records, reported that Bankman-Fried bought $500M for 13.56% at the time of the 2022 investment. That arithmetic implies roughly $3.7B post-money, not the $4.1B some databases assign to both Series B and Series C. The company never published a Series B valuation. The same records are the basis for later reports that the FTX estate sold that stake in 2024 for about $1.3B.

Series C vs a March 2023 Spark report. The Information, via Axios and others in March 2023, reported a $300M Spark-led raise at $4.1B. On May 23, 2023 Anthropic announced a $450M Series C led by Spark and did not disclose valuation. TechCrunch said the company would not give a price and that The Information had earlier said Anthropic was seeking capital at an over-$4.1B valuation. Axios/PitchBook said the May round valued the company at more than $4B. Whether the March figure was an earlier close, a different check, or a report that was later superseded is not resolved in company materials.

Series D is the weakest priced round in the set.
- The Information (Dec 20, 2023), via Reuters: talks for $750M, $15B not including the investment, final price could go above $18B.
- Reuters the next day, citing its own source: pre-round valuation of $18.4B.
- Forbes (Jan 11, 2024): round still in progress; “nearly quadruple” the valuation to $18.4B; Menlo SPV filing aimed at $500M, with another $250M from Menlo and insiders. Forbes also said the round was partly a way to price Amazon’s and Google’s earlier bets, and that Google’s investment converted into this round.
- NYT (Feb 20, 2024): Menlo closed $750M that month; three people said valuation had tripled to $15B.
- FT (Mar 27, 2024): VC investors expected to commit at least $750M, close expected in April, combined deals at a valuation of more than $18B.

There is no Anthropic blog post. $15B vs $18.4B should be left as a discrepancy, not averaged. Later write-ups (including a 2026 TechCrunch account of Menlo’s bet) repeat ~$18–18.4B and a “quadrupling,” which tracks Forbes/Reuters more than the NYT’s post-close $15B.

Series E was upsized, not extended after announcement. Bloomberg reported Anthropic had planned to raise about $2B and closed $3.5B because the round was oversubscribed. Company post-money of $61.5B is consistent across Anthropic, Reuters, Bloomberg, and the NYT. Some data vendors later print a different Series E valuation (for example about $59.8B); that conflicts with the company release.

Series F was upsized from a much smaller target. FT: originally sought about $5B, closed $13B. TechCrunch: prior reports of $3–5B at $170B, versus the completed $13B at $183B post-money. The $170B figure is the pre-money, not a rival post-money. WSJ’s “August” versus the September 2 announcement is a close-versus-announce gap, not a second round.

Series G is the clearest multi-step upsize.
- WSJ (Jan 7, 2026): plans to raise $10B at $350B before the new investment, led by GIC and Coatue, in addition to up to $15B Nvidia and Microsoft had planned to invest.
- FT (Jan 27, 2026): target doubled to about $20B at a $350B valuation after demand of five to six times the original target; initial $10–15B expected imminently, rest over the following weeks.
- Bloomberg (Feb 6, 2026): on track for more than $20B at $350B, close as soon as the next week; checks north of $1B each from Coatue, GIC, and Iconiq, plus as much as $15B from Nvidia and Microsoft.
- Anthropic (Feb 12, 2026): $30B at $380B post-money, which is $350B pre-money. FT the same day said the company raised its funding target by $10B during the process.

The $30B is not all incremental venture capital. Anthropic said the round includes a portion of previously announced Microsoft and NVIDIA investments. It did not say how much of the $30B that portion was.

Series H was also upsized and partly pre-committed. TechCrunch said that in April 2026 Anthropic was close to a $50B round. Bloomberg (May 13, 2026) reported early talks for at least $30B at more than $900B excluding new money. The May 28 release was $65B at $965B post-money ($900B pre-money), of which $15B was previously committed hyperscaler capital, including $5B from Amazon. Stripping that $15B leaves about $50B of other capital, in line with the earlier TechCrunch figure. Treat $65B / $965B as the company-stated round, and flag that headline size includes prior commitments.

Not separate priced equity rounds

These show up in funding databases as “rounds” but were not announced as independently priced primary equity.

• Google, late 2022, reported Feb 3, 2023 (FT): about $300M for roughly a 10% stake, which implies about $3B post-money, plus a cloud contract. Some outlets (VentureBeat, and a New York Times figure repeated by Fortune) said the deal valued Anthropic around $5B, which does not match a 10% stake for $300M. FT is the primary report; Google confirmed an investment and a cloud contract but not the stake size. This predates Series C and is best treated as a strategic equity investment, not a named series.
• Amazon, September 2023 ($1.25B) and March 2024 ($2.75B): up to $4B, structured as convertible notes, not a priced round. UK CMA decision (September 2024) describes the $4B as notes convertible into non-voting equity. NYT and Reuters reported the same structure.
• Google, October 27, 2023: up to $2B ($500M upfront, $1.5B over time). Bloomberg: Anthropic confirmed this was a convertible note that would convert at the next funding round. WSJ broke the commitment. Not a priced round on its own. Forbes later tied conversion of Google’s tranche to the Menlo Series D.
• Amazon, November 22, 2024: another $4B, bringing the commitment to $8B. Reuters: like the first $4B, this was convertible notes in phases, first tranche $1.3B. Anthropic said Amazon remained a minority investor. Not a disclosed priced equity round. A portion later converted into preferred stock around the March 2025 Series E, producing a multibillion-dollar accounting gain in Amazon’s Q1 2025 results (GeekWire, citing Amazon’s 10-Q). That conversion used the Series E price; it was not a new Anthropic round.
• Google, January 2025: press reported an additional about $1B. Not announced by Anthropic as a priced series, and no company valuation was attached in the sources retrieved here.
• Microsoft / NVIDIA commitments (announced before Series G) and Amazon’s further 2026 commitment: Anthropic’s Series G and Series H releases say those rounds include portions of previously committed strategic investments. April 2026 reports of Amazon putting in $5B (with more contingent) and Google agreeing to invest at a $350B valuation describe commitments that were later rolled into Series H’s $965B price, not a separate close at $350B.
• Debt, secondaries, and the IPO process are outside this table. Press has described a 2025 credit facility and, in 2026, a much larger debt package; those are not equity. Secondary sales (including the FTX estate sale) do not set a primary round price. The June 1, 2026 confidential draft S-1 states that share count and price have not been set.

Database tranche labels such as “Series H-1 / H-4” or “Series E-4,” and vendor valuations that reprint the same price for Series B and Series C, are not in Anthropic’s disclosures and should not be treated as additional priced rounds.

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Recent Findings Supplement (October 2026)

The most recent priced equity round for Anthropic is the Series H (May 28, 2026), which closed the same day as the announcement per the company’s press release and contemporaneous reporting.[1][2][3]

This round raised $65 billion at a $965 billion post-money valuation (pre-money ~$900 billion), making Anthropic the most valuable private AI company at the time and surpassing OpenAI’s then-reported valuation. It was led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, with co-leads including Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ, and XN. Significant participants included Baillie Gifford, Blackstone, Brookfield, D.E. Shaw Ventures, DST Global, Fidelity Management & Research, General Catalyst, Insight Partners, Jane Street, Lightspeed Venture Partners, MGX, Temasek, and others, plus strategic infrastructure partners Micron, Samsung, and SK Hynix. It incorporated $15 billion in previously committed hyperscaler investments, including $5 billion from Amazon.[1][2]

Figures are directly from Anthropic’s official press release (anthropic.com/news/series-h), corroborated without material discrepancies by Reuters, TechCrunch, Financial Times, and others. The round was not described as an extension or upsized close in primary sources, though it exceeded an initial ~$30 billion target from financial institutions thanks to infrastructure partner participation and hyperscaler commitments.[4]

No new priced equity rounds have been announced or closed after the May 28, 2026 Series H as of October 3, 2026. Subsequent developments (e.g., confidential IPO filing in June 2026, ongoing IPO preparations targeting a potential November 2026 listing, revenue run-rate updates, and infrastructure commitments) do not involve new priced equity raises.[5][6]

Prior rounds referenced in recent 2026 reporting (for chronological context) include:
- Series G (announced/closed February 12, 2026): $30 billion at $380 billion post-money valuation. Co-led by GIC and Coatue Management, with participation from D.E. Shaw Ventures, ICONIQ, MGX, Founders Fund, and others (including portions of prior Microsoft/Nvidia commitments). Reported consistently in Reuters and Bloomberg timelines.[7][8]
- Series F (September 2025): $13 billion at $183 billion post-money. Co-led by Iconiq, Fidelity, and Lightspeed.[5]
- March 2025 round: $3.5 billion at $61.5 billion post-money, led by Lightspeed Venture Partners.[5]

Earlier rounds (e.g., Series A in 2021 and intermediates through 2024) predate the post-April 2026 publication focus and lack fresh primary details or discrepancies in the retrieved sources; they are not updated here as no new data emerged. All figures above derive from press reports and company announcements in the sources; no direct Anthropic SEC filings for these rounds were identified in results. No source conflicts on the Series H or G terms were noted.[9]

For anyone tracking or competing in this space, the Series H details underscore Anthropic’s ability to attract strategic (chipmakers) and hyperscaler capital alongside traditional VCs, tied to compute scaling and Claude demand—key differentiators versus pure financial rounds. IPO-related activity (confidential filing, investor day, revenue projections) signals a shift toward public markets rather than further private equity raises in the near term.