Andrew J. Grethlein
Personal wealth note: Equibles reports source-backed professional activity and disclosed compensation; it does not estimate personal net worth.
About Andrew J. Grethlein
Earlier roles on record: COO at Geron Corp (GERN) until October 15, 2025. Geron Corp reported in an 8-K filed October 14, 2025 that Andrew J. Grethlein resigned as Executive Vice President, Chief Operating Officer, effective October 15, 2025. The proxy statement of Geron Corp reports total compensation of $3,316,444 for Andrew J. Grethlein in fiscal 2025, including a base salary of $563,276. Disclosed compensation is on record for 9 fiscal years.
“Effective October 15, 2025, Andrew J. Grethlein, Ph.D., Executive Vice President, Chief Operating Officer and Jim Ziegler, Executive Vice President, Chief Commercial Officer will depart from the Company.”
Summary generated from SEC filings and earnings-call records held by Equibles.
Affiliation history
Recorded current and former roles; source labels appear when available.
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Start not stated–2025-10-15
Company network
Recorded roles and call appearances connecting this person to public companies.
Executive compensation
Compensation components disclosed in company proxy statements. Amounts are nominal USD; total is the company-reported figure.
| Fiscal year | Company | Role | Salary | Total |
|---|---|---|---|---|
| 2025 | Geron Corp (GERN) | Former Executive Vice President, Chief Operating Officer | $563,276 | $3,316,444 |
| 2024 | Geron Corp (GERN) | Executive Vice President, Chief Operating Officer | $600 | $2,813,956 |
| 2023 | Geron Corp (GERN) | Former Executive Vice President, Chief Operating Officer | $525,000 | $2,415,091 |
| 2022 | Geron Corp (GERN) | Executive Vice President, Chief Operating Officer | $507,546 | $1,371,749 |
| 2021 | Geron Corp (GERN) | Executive Vice President, Chief Operating Officer | $490,383 | $1,165,648 |
| 2020 | Geron Corp (GERN) | Executive Vice President, Chief Operating Officer | $476,100 | $1,034,173 |
| 2019 | Geron Corp (GERN) | Executive Vice President, Chief Operating Officer | $460,000 | $930,994 |
| 2018 | Geron Corp (GERN) | Executive Vice President, Chief Operating Officer | $430,000 | $1,150,235 |
| 2017 | Geron Corp (GERN) | Executive Vice President, Chief Operating Officer | $416,200 | $1,123,629 |
Recent activity
Earnings-call and investor-event appearances, plus filed executive appointments or departures, newest first.