Geron Corp
GERN- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000886744
No open-market purchases or sales by Geron Corp insiders were filed in the last 90 days; 260 institutions reported holding it in 13F filings for Q2 2026, worth $610.5M in total; no superinvestor holds it.
Holders of 5% or more of GERN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Geron Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 13G/A | 9.90%64.0M shares | – | May 15, 20251 filing | May 15, 2025 | SEC |
| Soleus Capital Master Fund, L.P. | 13G | 5.20%33.0M shares | New | Mar 3, 20261 filing | Mar 3, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
8 Schedule 13D and 13G filings on Geron Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 15, 20268:40 AM ET | Deep Track Capital, LPand 2 others | 13G/A | 4.95%31.7M shares | −0.14 ppfrom 5.09%Below 5% | Mar 31, 2026 | SEC |
| Mar 26, 20266:40 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Mar 3, 20264:30 PM ET | Soleus Capital Master Fund, L.P.and 5 others | 13G | 5.20%33.0M shares | New | Feb 25, 2026 | SEC |
| Feb 13, 20268:45 AM ET | Deep Track Capital, LPand 2 others | 13G/A | 5.09%32.5M shares | −1.66 ppfrom 6.75% | Dec 31, 2025 | SEC |
| Aug 14, 20258:46 AM ET | Deep Track Capital, LPand 2 others | 13G/A | 6.75%43.0M shares | +1.25 ppfrom 5.50% | Jun 30, 2025 | SEC |
| May 15, 20254:57 PM ET | Ra Capital Management, L.P.and 3 others | 13G/A | 9.90%64.0M shares | – | Mar 31, 2025 | SEC |
| Mar 25, 20254:06 PM ET | Deep Track Capital, LPand 2 others | 13G | 5.50%35.0M shares | New | Mar 18, 2025 | SEC |
| Feb 14, 20259:00 AM ET | RTW Investments, LPand 1 other | 13G/A | 0.00%0 shares | –Below 5% | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Geron Corp shares.
No Form 144 notices for Geron Corp are on file.