Geron Corp
SEC CIK 886744 · GERN · last insider filing 2026-05-26
Directors (from insider filings)
| Name | Capacity as filed | Filings |
|---|---|---|
| Spiegel Robert J. | Director | filed 2010 - 2026 |
| Molineaux Susan | Director | filed 2012 - 2026 |
| Bir Dawn Carter | Director · Interim President and CEO | filed 2019 - 2026 |
| O'Farrell Elizabeth G. | Director | filed 2019 - 2026 |
| Mcdonald John F | Director | filed 2022 - 2026 |
| Andrews Patricia S | Director | filed 2026 - 2026 |
| Chinoporos Constantine | Director | filed 2026 - 2026 |
| Semerjian Harout | Director · President and CEO | filed 2025 - 2025 |
| Lawlis V Bryan | Director | filed 2012 - 2025 |
| Aggarwal Gaurav | Director | filed 2023 - 2025 |
| Scarlett John A | Director · President, CEO and Chairman | filed 2011 - 2025 |
| Eastham Karin | Director | filed 2009 - 2023 |
| Behrs Melissa Kelly | Director · VP, Oncology | filed 2006 - 2021 |
| Bradbury Daniel | Director | filed 2012 - 2019 |
| Huh Hoyoung | Director · Executive Chairman | filed 2010 - 2018 |
| Hofstaetter Thomas | Director | filed 2010 - 2015 |
| Fritzky Edward V | Director | filed 2006 - 2013 |
| Kiley Thomas | Director | filed 2006 - 2013 |
| Greenwood David | Director · President, Interim CEO, CFO | filed 2006 - 2012 |
| Barkas Alexander E | Director | filed 2006 - 2011 |
| Homcy Charles J | Director | filed 2006 - 2011 |
| Okarma Thomas | Director · President and CEO | filed 2006 - 2010 |
| Zenner Patrick J | Director | filed 2006 - 2010 |
| Walker John Peter | Director | filed 2006 - 2009 |
Officers (from insider filings)
| Name | Title as filed | Filings |
|---|---|---|
| Williams Timothy | EVP and Chief Legal Officer | filed 2026 - 2026 |
| Robertson Michelle | EVP, Chief Financial Officer | filed 2023 - 2026 |
| Eid Joseph | EVP, Research and Development | filed 2024 - 2026 |
| Elnawawi Ahmed | EVP, Chief Commercial Officer | filed 2025 - 2025 |
| Samuels Scott Alan | EVP, Chief Legal Officer | filed 2023 - 2025 |
| Ziegler James | EVP, Chief Commercial Officer | filed 2024 - 2025 |
| Grethlein Andrew J | EVP, Technical Operations | filed 2012 - 2025 |
| Kapur Anil | EVP, Corp Strategy & CCO | filed 2019 - 2024 |
| Feller Faye | EVP, Chief Medical Officer | filed 2022 - 2024 |
| Bloom Olivia Kyusuk | VP, Chief Acctg Officer | filed 2010 - 2023 |
| Rosenfield Stephen | Secretary | filed 2011 - 2022 |
| Rizo Aleksandra | EVP, Chief Medical Officer | filed 2019 - 2022 |
| Parker Craig C | SVP, Corporate Development | filed 2012 - 2014 |
| Kelsey Stephen Michael | EVP, R&D, Chief Med Officer | filed 2009 - 2013 |
| Earp David | SVP, Corp Transactions | filed 2006 - 2012 |
| Cooper Graham K | EVP, Bus Dev & CFO | filed 2012 - 2012 |
| Lebkowski Jane | SVP, Regenerative Medicine | filed 2006 - 2012 |
| Spink Katharine E. | VP Ops, Regen Med Programs | filed 2009 - 2012 |
| Nallicheri Melanie I | SVP Corp Dev | filed 2011 - 2012 |
| Harley Calvin | VP, CSO Telomerase Tech | filed 2006 - 2009 |
| Benedetti Fabio M | SVP, Chief Med Off, Oncology | filed 2008 - 2009 |
| Colowick Alan | President, Oncology | filed 2006 - 2008 |
About this record
From the SEC's insider-transaction filings (Forms 3, 4 and 5). Every reporting director and officer carries a Commission-assigned identifier (CIK), so these footprints are identifier-verified - no name matching involved. Insiders file when they transact, so dates are filing dates: "last filed" never means "served until". This layer is not yet joined to the nonprofit register - identity joins ship only after independent review.
Source: SEC Insider Transactions Data Sets (Forms 3/4/5), US Federal Government public domain.