InsiderClue
← All stocks

GERON CORP

GERN Mostly scheduled
CIK 0000886744 #2537 in the set updated 21 Sep 2026
Bought (120 mo)
$286.14K
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$23.16M
$0.00 on a plan · $22.92M straight out of an exercise
Sold at will
$241.27K
1 of 28 sales
Net
−$22.87M
+$44.87K against sales at will

By person

18 insiders · 41 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
SCARLETT JOHN A
Chairman, President and CEO
$22.06K (1)
$6.47M (4) scheduled
−$6.45M
12,500
0.0019%
$24.25K
—
ROSENFIELD STEPHEN
EVP, Chief Legal Off & Sec
—
$6.14M (7) scheduled
−$6.14M
0
0.0000%
$0.00
—
GRETHLEIN ANDREW J
EVP, Chief Operating Officer
—
$4.24M (3) scheduled
−$4.24M
0
0.0000%
$0.00
—
Kapur Anil
EVP, Corp Strategy & CCO
—
$1.96M (1) scheduled
−$1.96M
0
0.0000%
$0.00
—
Feller Faye
EVP, Chief Medical Officer
—
$1.33M (1) scheduled
−$1.33M
0
0.0000%
$0.00
—
Bloom Olivia Kyusuk
EVP, Chief Financial Officer
—
$1.23M (1) scheduled
−$1.23M
74,588
0.0116%
$144.70K
0.0%
Spiegel Robert J.
Director
—
$1.20M (6) scheduled
−$1.20M
205,810
0.0320%
$399.27K
+214.5%
BEHRS MELISSA KELLY
EVP, Chief Business Officer
—
$241.27K (1)
−$241.27K
0
0.0000%
$0.00
−100.0%
LAWLIS V BRYAN
Director
$15.67K (1)
$236.25K (2) scheduled
−$220.58K
13,300
0.0021%
$25.80K
—
Ziegler James
EVP, Chief Commercial Officer
$160.00K (1)
—
+$160.00K
100,000
0.0156%
$194.00K
—
Molineaux Susan
Director
—
$86.80K (1) scheduled
−$86.80K
238,507
0.0371%
$462.70K
+56.4%
O'Farrell Elizabeth G.
Director
$64.27K (5)
—
+$64.27K
53,268
0.0083%
$103.34K
+171.2%
Samuels Scott Alan
EVP, Chief Legal Officer
$24.15K (1)
—
+$24.15K
26,682
0.0042%
$51.76K
+128.4%
ROBERTSON MICHELLE
EVP, CHIEF FINANCIAL OFFICER
—
$19.12K (1) scheduled
−$19.12K
17,645
0.0027%
$34.23K
—
Huh Hoyoung
Director
—
—
—
154,301
0.0240%
$299.34K
+29.5%
EASTHAM KARIN
Director
—
—
—
109,047
0.0170%
$211.55K
+179.3%
BRADBURY DANIEL
Director
—
—
—
51,323
0.0080%
$99.57K
+372.5%
Aggarwal Gaurav
Director
—
—
—
1,970
0.0003%
$3.82K
—

Individual transactions

27
Insider
Date
Role
Action
Shares
Price
Amount
ROBERTSON MICHELLE
18 Feb 2026
EVP, CHIEF FINANCIAL OFFICER
Sold after exercise
9,855
$1.94
$19.12K
GRETHLEIN ANDREW J
8 Jul 2024
EVP, Chief Operating Officer
Sold after exercise
674,348
$4.56
$3.07M
Kapur Anil
10 Jun 2024
EVP, Corp Strategy & CCO
Sold after exercise
421,875
$4.65
$1.96M
Feller Faye
10 Jun 2024
EVP, Chief Medical Officer
Sold after exercise
287,900
$4.63
$1.33M
SCARLETT JOHN A
4 Jun 2024
Chairman, President and CEO
Sold after exercise
600,000
$4.00
$2.40M
LAWLIS V BRYAN
15 May 2024
Director
Sold after exercise
35,000
$3.75
$131.25K
LAWLIS V BRYAN
11 May 2023
Director
Sold after exercise
35,000
$3.00
$105.00K
Molineaux Susan
1 May 2023
Director
Sold after exercise
35,000
$2.48
$86.80K
SCARLETT JOHN A
10 Feb 2023
Chairman, President and CEO
Sold after exercise
446,668
$3.00
$1.34M
SCARLETT JOHN A
9 Feb 2023
Chairman, President and CEO
Sold after exercise
446,666
$3.03
$1.35M
GRETHLEIN ANDREW J
9 Feb 2023
EVP, Chief Operating Officer
Sold after exercise
234,719
$3.03
$711.20K
GRETHLEIN ANDREW J
9 Feb 2023
EVP, Chief Operating Officer
Sold after exercise
150,000
$3.03
$454.50K
SCARLETT JOHN A
8 Feb 2023
Chairman, President and CEO
Sold after exercise
446,666
$3.08
$1.38M
Bloom Olivia Kyusuk
8 Feb 2023
EVP, Chief Financial Officer
Sold after exercise
400,000
$3.08
$1.23M
Spiegel Robert J.
13 Sep 2018
Director
Sold after exercise
35,000
$6.85
$239.75K
Spiegel Robert J.
13 Sep 2018
Director
Sold after exercise
35,000
$6.85
$239.75K
Spiegel Robert J.
13 Sep 2018
Director
Sold after exercise
35,000
$6.85
$239.75K
Spiegel Robert J.
13 Sep 2018
Director
Sold after exercise
15,000
$6.85
$102.75K
Spiegel Robert J.
13 Sep 2018
Director
Sold after exercise
10,000
$6.85
$68.50K
Spiegel Robert J.
13 Sep 2018
Director
Sold after exercise
45,000
$6.85
$308.25K
ROSENFIELD STEPHEN
24 Aug 2018
EVP, Genl Counsel & Secretary
Sold after exercise
37,500
$4.51
$169.13K
ROSENFIELD STEPHEN
24 Aug 2018
EVP, Genl Counsel & Secretary
Sold after exercise
112,500
$4.51
$507.38K
ROSENFIELD STEPHEN
24 Aug 2018
EVP, Genl Counsel & Secretary
Sold after exercise
131,250
$4.51
$591.94K
ROSENFIELD STEPHEN
24 Aug 2018
EVP, Genl Counsel & Secretary
Sold after exercise
420,000
$4.51
$1.89M
ROSENFIELD STEPHEN
24 Aug 2018
EVP, Genl Counsel & Secretary
Sold after exercise
200,000
$4.51
$902.00K
ROSENFIELD STEPHEN
24 Aug 2018
EVP, Genl Counsel & Secretary
Sold after exercise
425,000
$4.51
$1.92M
ROSENFIELD STEPHEN
24 Aug 2018
EVP, Genl Counsel & Secretary
Sold after exercise
36,000
$4.51
$162.36K
Show all 41 transactions →

What was left out

Form 4 filings counted 226
Amendments (4/A) skipped 3
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 27
Sales at will 1
Transactions with no price 0
Shares from compensation/vesting 6,195,952
Sales filed before the plan box existed 1
History held since 3 Oct 2016