GERN

insider transactions

GERON CORP — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Grant·A
May 20, 26

John F Mcdonald

Director

$0

220.0K sh

Own New
Grant·A
May 20, 26

Elizabeth G. O'Farrell

Director

$0

220.0K sh

Own New
Grant·A
May 20, 26

Susan Molineaux

Director

$0

220.0K sh

Own New
Grant·A
May 20, 26

Robert J. Spiegel

Director

$0

220.0K sh

Own New
Grant·A
Apr 13, 26

Timothy Williams

EVP and Chief Legal Officer

$0

2.5M sh

Own New
Grant·A
Mar 31, 26

Robert J. Spiegel

Director

$7.8K

5.2K sh · $1.49

Own +3%
Grant·A
Mar 25, 26

Constantine Chinoporos

Director

$0

270.0K sh

Own New

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
May 20, 2026	John F Mcdonald	Director	Grant A	220.0K	New	—	$0
May 20, 2026	Elizabeth G. O'Farrell	Director	Grant A	220.0K	New	—	$0
May 20, 2026	Susan Molineaux	Director	Grant A	220.0K	New	—	$0
May 20, 2026	Robert J. Spiegel	Director	Grant A	220.0K	New	—	$0
Apr 13, 2026	Timothy Williams	EVP and Chief Legal Officer	Grant A	2.5M	New	—	$0
Mar 31, 2026	Robert J. Spiegel	Director	Grant A	5.2K	+3%	$1.49	$7.8K
Mar 25, 2026	Constantine Chinoporos	Director	Grant A	270.0K	New	—	$0

About GERN insider trading

This page tracks insider transactions for GERON CORP (GERN) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.