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Geron (GERN)
NASDAQ
$1.35-$0.005 (-0.37%)
Price as of Jun 23, 2026 7:46 PM EDT- $859.6MMarket Cap
- -5.63%1-Year Change
- BiotechnologyIndustry
Geron (GERN)
$1.35-$0.005 (-0.37%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
RA CAPITAL MANAGEMENT, L.P. | 9.94% | 63.8M | 0 (0.00%) | Mar 31, 2026 |
BLACKROCK FUNDING, INC. /DE | 7.77% | 49.9M | +1.2M (+2.45%) | Dec 31, 2024 |
BLACKROCK, INC. | 7.38% | 47.3M | +1.4M (+2.97%) | Mar 31, 2026 |
BLACKROCK INC. | 7.26% | 46.6M | +5.1M (+11.04%) | Jun 30, 2024 |
SOLEUS CAPITAL MANAGEMENT, L.P. | 6.47% | 41.5M | +18.2M (+43.89%) | Mar 31, 2026 |
VANGUARD GROUP INC | 5.56% | 35.7M | +1.2M (+3.47%) | Dec 31, 2025 |
DEEP TRACK CAPITAL, LP | 4.94% | 31.7M | -790,993 (-2.49%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 4.05% | 26.0M | +71,345 (+0.27%) | Mar 31, 2026 |
iSHARES TRUST | 3.62% | 23.2M | -633,733 (-2.73%) | Mar 31, 2026 |
SPDR SERIES TRUST | 2.59% | 16.6M | +3.0M (+18.03%) | Mar 31, 2026 |
VANGUARD EXPLORER FUND | 1.37% | 8.8M | 0 (0.00%) | Jan 31, 2026 |
MUTUAL FUND SERIES TRUST | 1.10% | 7.1M | 0 (0.00%) | Mar 31, 2026 |
FIDELITY SELECT PORTFOLIOS | 1.01% | 6.5M | -1.5M (-23.15%) | Feb 28, 2026 |
TEKLA HEALTHCARE INVESTORS | 0.97% | 6.3M | 0 (0.00%) | Mar 31, 2026 |
Current Ownership Distribution
- Institutions6.8B (84.84%)
- Mutual Funds1.2B (14.77%)
- Insiders31.2M (0.39%)
- Other0 (0.00%)
Insider Transactions
- 0.39% (31.2M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 1Number of InsiderSelling (last 12 months)
- $15,112.60Amount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Spiegel Robert J. | Award | Mar 31, 2026 | $7,812.07 | 5,243 | $1.49 | 199,707 |
Chinoporos Constantine | Award | Mar 25, 2026 | $0.00 | 270,000 | $0.00 | 270,000 |
Andrews Patricia S | Award | Mar 25, 2026 | $0.00 | 270,000 | $0.00 | 270,000 |
ROBERTSON MICHELLE EVP, CHIEF FINANCIAL OFFICER | Exempt | Feb 18, 2026 | $0.00 | 27,500 | $0.00 | 82,500 |
ROBERTSON MICHELLE EVP, CHIEF FINANCIAL OFFICER | Exempt | Feb 18, 2026 | $0.00 | 27,500 | $0.00 | 27,500 |
ROBERTSON MICHELLE EVP, CHIEF FINANCIAL OFFICER | Sell | Feb 18, 2026 | $19,118.70 | 9,855 | $1.94 | 17,645 |
Eid Joseph EVP, R&D; Chief Medical Office | Award | Feb 17, 2026 | $0.00 | 2.2M | $0.00 | 2.2M |
ROBERTSON MICHELLE EVP, CHIEF FINANCIAL OFFICER | Award | Feb 17, 2026 | $0.00 | 1.7M | $0.00 | 1.7M |
Spiegel Robert J. | Award | Sep 30, 2025 | $7,811.74 | 5,702 | $1.37 | 188,546 |
Semerjian Harout President and CEO | Award | Aug 07, 2025 | $0.00 | 7.0M | $0.00 | 7.0M |
Semerjian Harout President and CEO | Award | Aug 07, 2025 | $0.00 | 4.0M | $0.00 | 4.0M |
O'Farrell Elizabeth G. | Award | May 21, 2025 | $0.00 | 180,000 | $0.00 | 180,000 |
McDonald John F | Award | May 21, 2025 | $0.00 | 180,000 | $0.00 | 180,000 |
LAWLIS V BRYAN | Award | May 21, 2025 | $0.00 | 180,000 | $0.00 | 180,000 |
Bir Dawn Carter Interim President and CEO | Award | May 21, 2025 | $0.00 | 180,000 | $0.00 | 180,000 |
Molineaux Susan | Award | May 21, 2025 | $0.00 | 180,000 | $0.00 | 180,000 |
LAWLIS V BRYAN | Buy | May 09, 2025 | $15,667.40 | 13,300 | $1.18 | 13,300 |
Spiegel Robert J. | Award | Mar 31, 2025 | $7,811.67 | 4,913 | $1.59 | 177,304 |
Samuels Scott Alan EVP, Chief Legal Officer | Buy | Feb 27, 2025 | $24,150.00 | 15,000 | $1.61 | 26,682 |
Ziegler James EVP, Chief Commercial Officer | Buy | Feb 27, 2025 | $160,000.00 | 100,000 | $1.60 | 100,000 |
SCARLETT JOHN A Chairman, President and CEO | Buy | Feb 27, 2025 | $22,062.50 | 12,500 | $1.76 | 12,500 |
Ziegler James EVP, Chief Commercial Officer | Award | Feb 18, 2025 | $0.00 | 529,000 | $0.00 | 529,000 |
Samuels Scott Alan EVP, Chief Legal Officer | Award | Feb 18, 2025 | $0.00 | 621,000 | $0.00 | 621,000 |
GRETHLEIN ANDREW J EVP, Chief Operating Officer | Award | Feb 18, 2025 | $0.00 | 839,000 | $0.00 | 839,000 |
Samuels Scott Alan EVP, Chief Legal Officer | Award | Feb 18, 2025 | $0.00 | 104,000 | $0.00 | 104,000 |
ROBERTSON MICHELLE EVP, Chief Financial Officer | Award | Feb 18, 2025 | $0.00 | 656,000 | $0.00 | 656,000 |
SCARLETT JOHN A Chairman, President and CEO | Award | Feb 18, 2025 | $0.00 | 2.5M | $0.00 | 2.5M |
Ziegler James EVP, Chief Commercial Officer | Award | Feb 18, 2025 | $0.00 | 89,000 | $0.00 | 89,000 |
GRETHLEIN ANDREW J EVP, Chief Operating Officer | Award | Feb 18, 2025 | $0.00 | 140,000 | $0.00 | 140,000 |
ROBERTSON MICHELLE EVP, Chief Financial Officer | Award | Feb 18, 2025 | $0.00 | 110,000 | $0.00 | 110,000 |