Geron Corp
GERNFigures shown here come from public SEC filings. Dates beside each section show the available history.
How Geron Corp Makes Money
Follow each dollar of revenue through to what shareholders keep.
From revenue to net income
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Financial Summary
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SEC filings supply these figures; updates after the dates shown are not included. This page includes 16 annual periods. The latest annual period ends Dec 31, 2025. The latest insider filing shown is dated May 26, 2026. The latest institutional report shown is dated Mar 31, 2026; other ownership filings may exist.
Ownership
Who holds the shares, as reported in SEC ownership filings.
Reported 13F positions
Each row shows what a filer reported for one date, not a current position. The link opens that filing.
| Filer | Report date | Shares | Value | Filing |
|---|---|---|---|---|
| NEW YORK STATE COMMON RETIREMENT FUND | 2026-03-31 | 171,453 | $255K | SEC filing |
| MILLENNIUM MANAGEMENT LLC | 2026-03-31 | 7,321,522 | $10.9M | SEC filing |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 2026-03-31 | 1,271,014 | $1.89M | SEC filing |
| Private Advisor Group, LLC | 2026-03-31 | 423,328 | $631K | SEC filing |
| SEGALL BRYANT & HAMILL, LLC | 2026-03-31 | 4,740,048 | $7.06M | SEC filing |
| Cresset Asset Management, LLC | 2026-03-31 | 194,464 | $290K | SEC filing |
| FMR LLC | 2026-03-31 | 6,597,156 | $9.83M | SEC filing |
| MetLife Investment Management, LLC | 2026-03-31 | 250,662 | $373K | SEC filing |
| SEI INVESTMENTS CO | 2026-03-31 | 41,891 | $62.4K | SEC filing |
| Elmwood Wealth Management, Inc. | 2026-03-31 | 29,815 | $44.4K | SEC filing |
| TFC Financial Management, Inc. | 2026-03-31 | 1,000 | $1.49K | SEC filing |
| ALPS ADVISORS INC | 2026-03-31 | 521,439 | $777K | SEC filing |
| BNP PARIBAS FINANCIAL MARKETS | 2026-03-31 | 426,698 | $636K | SEC filing |
| ASSETMARK, INC | 2026-03-31 | 335 | $499 | SEC filing |
| Rockefeller Capital Management L.P. | 2026-03-31 | 27,996 | $41.7K | SEC filing |
| Bank of New Hampshire | 2026-03-31 | 2,000 | $2.98K | SEC filing |
| AMALGAMATED BANK | 2026-03-31 | 17,162 | Not shown | SEC filing |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 2026-03-31 | 8,599 | $12.8K | SEC filing |
| Stembrook Asset Management, LLC | 2026-03-31 | 20,000 | $29.8K | SEC filing |
| GROUP ONE TRADING LLC | 2026-03-31 | 207,981 | $310K | SEC filing |
- Each value is checked against Geron Corp's share prices from within about three months of its report date (insiders' Form 4 trades and the latest close).
- Value not shown for 1 row: the filed value is about 1,000 times too small for the share count at Geron Corp's share price.
120 filers have only one report here.
Unusually large insider trades
Each trade is compared with the other insider trades of the same kind in the same security among Geron Corp's recent filings on file. Size alone is context, not a prediction or evidence of improper trading.
- 2025-02-27 · Ziegler James: Larger than all 8 other insider purchases of Common Stock on file. SEC filing
- 2024-07-08 · GRETHLEIN ANDREW J: Larger than all 18 other insider sales of Common Stock on file. SEC filing
- 2024-06-04 · SCARLETT JOHN A: Larger than 17 of the 18 other insider sales of Common Stock on file. SEC filing
Independent insiders buying near the same time
Purchases & sales (open market or private)
| Security | Code | Price | Filing | |||
|---|---|---|---|---|---|---|
| 2026-02-18 | ROBERTSON MICHELLE · EVP, CHIEF FINANCIAL OFFICER | Common Stock | S — Open market or private sale | −9,855 | 1.94 | SEC filing |
| 2025-05-09 | LAWLIS V BRYAN · Director | Common Stock | P — Open market or private purchase | +13,300 | 1.18 | SEC filing |
| 2025-02-27 | Samuels Scott Alan · EVP, Chief Legal Officer | Common Stock | P — Open market or private purchase | +15,000 | 1.61 | SEC filing |
| 2025-02-27 | SCARLETT JOHN A · Chairman, President and CEO | Common Stock | P — Open market or private purchase | +12,500 | 1.77 | SEC filing |
| 2025-02-27 | Ziegler James · EVP, Chief Commercial Officer | Common Stock | P — Open market or private purchase | +100,000 | 1.60 | SEC filing |
| 2024-07-08 | GRETHLEIN ANDREW J · EVP, Chief Operating Officer | Common Stock | S — Open market or private sale | −674,348 | 4.56 | SEC filing |
| 2024-06-10 | Kapur Anil · EVP, Corp Strategy & CCO | Common Stock | S — Open market or private sale | −421,875 | 4.65 | SEC filing |
| 2024-06-10 | Feller Faye · EVP, Chief Medical Officer | Common Stock | S — Open market or private sale | −287,900 | 4.63 | SEC filing |
Showing 8 of 19 rows
Grants, exercises, tax & gifts
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2026-05-20 | Bir Dawn Carter · Director | Stock Option (right to buy) | A — Grant, award, or other acquisition | +220,000 | SEC filing |
| 2026-05-20 | McDonald John F · Director | Stock Option (right to buy) | A — Grant, award, or other acquisition | +220,000 | SEC filing |
| 2026-05-20 | Molineaux Susan · Director | Stock Option (right to buy) | A — Grant, award, or other acquisition | +220,000 | SEC filing |
| 2026-05-20 | O'Farrell Elizabeth G. · Director | Stock Option (right to buy) | A — Grant, award, or other acquisition | +220,000 | SEC filing |
| 2026-05-20 | Spiegel Robert J. · Director | Stock Option (right to buy) | A — Grant, award, or other acquisition | +220,000 | SEC filing |
| 2026-04-13 | Williams Timothy · EVP and Chief Legal Officer | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +2,500,000 | SEC filing |
| 2026-03-31 | Spiegel Robert J. · Director | Common Stock | A — Grant, award, or other acquisition | +5,243 | SEC filing |
| 2026-03-25 | Andrews Patricia S · Director | Stock Option (Right to Buy) | A — Grant, award, or other acquisition | +270,000 | SEC filing |
Showing 8 of 20 rows
These tables describe filed transactions, not current holdings. Prices are shown as filed; a currency is added only when the filing's data names one. Amended and possible duplicate rows are left out of size comparisons and transaction groups.