Keros Therapeutics, Inc. (KROS) has 20 known insider and institutional holders on record. The largest holder is Seehra Jasbir with 197,444 shares. Other notable holders include Pontifax Management 4 G.P. (2015) Ltd. and Knowles Julius.
Over the last 12 months, insiders have made 32 transactions in KROS stock — 15 buys (valued at $7.72M) and 6 sells (valued at $16.28M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
KROS Insider Ownership
Top Holder
Seehra Jasbir
197,444 shares
Buys (12 mo)
15
$7.72M value
Sells (12 mo)
6
$16.28M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Seehra Jasbir |
Chief Executive Officer |
197,444 |
2026-04-06 |
|
| 2 |
Pontifax Management 4 G.p. (2015) Ltd. |
10 Percent Owner |
155,262 |
2020-11-19 |
|
| 3 |
Knowles Julius |
Director |
102,233 |
2025-12-18 |
|
| 4 |
Cho Esther |
Chief Legal Officer |
80,000 |
2026-03-27 |
|
| 5 |
Regnante Keith |
Chief Financial Officer |
60,000 |
2026-02-26 |
|
| 6 |
Rovaldi Christopher |
Chief Operating Officer |
60,000 |
2025-02-19 |
|
| 7 |
Adar1 Capital Management, Llc |
10 Percent Owner |
50,000 |
2025-04-11 |
|
| 8 |
Gordon Carl L |
Director |
45,057 |
2025-12-18 |
|
| 9 |
Orbimed Advisors Llc |
Director |
45,057 |
2025-12-18 |
|
| 10 |
Chyung Yung H. |
Chief Medical Officer |
44,000 |
2025-02-19 |
|
| 11 |
Ordonez Claudia |
Chief Medical Officer |
42,250 |
2021-01-12 |
|
| 12 |
Cooper Simon Peter |
Chief Medical Officer |
40,000 |
2024-02-15 |
|
| 13 |
Lerner Lorena Raquel |
Chief Science Officer |
31,127 |
2026-02-20 |
|
| 14 |
Newton Charles W. |
Director |
13,215 |
2026-03-11 |
|
| 15 |
Lachey Jennifer |
Chief Scientific Officer |
8,755 |
2022-07-19 |
|
| 16 |
Bienaime Jean Jacques |
Director |
7,450 |
2026-03-11 |
|
| 17 |
Gray Mary Ann |
Director |
5,250 |
2025-06-06 |
|
| 18 |
Seth Alpna |
Director |
5,250 |
2025-06-06 |
|
| 19 |
Kariv Tomer |
10 Percent Owner |
5,250 |
2025-06-06 |
|
| 20 |
Farzan Nima |
Director |
5,250 |
2025-06-06 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-02 |
Seehra Jasbir |
Chief Executive Officer |
Option Exercise (Sell) |
55,000 |
$0.30 |
$16.5K |
| 2026-02-24 |
Cho Esther |
Chief Legal Officer |
RSU Award |
80,000 |
$15.52 |
$1.24M |
| 2026-03-09 |
Newton Charles W. |
Director |
RSU Award |
13,215 |
- |
- |
| 2026-03-09 |
Newton Charles W. |
Officer |
Unknown |
- |
- |
- |
| 2026-03-09 |
Bienaime Jean Jacques |
Director |
Informative Buy |
2,000 |
$11.21 |
$22.42K |
| 2026-02-24 |
Seehra Jasbir |
Chief Executive Officer |
RSU Award |
100,000 |
$15.52 |
$1.55M |
| 2026-02-24 |
Regnante Keith |
Chief Financial Officer |
RSU Award |
60,000 |
$15.52 |
$931.2K |
| 2026-02-18 |
Cho Esther |
SVP, General Counsel |
Informative Sell |
4,745 |
$16.35 |
$77.58K |
| 2026-02-18 |
Lerner Lorena Raquel |
Chief Science Officer |
Informative Sell |
3,873 |
$16.35 |
$63.32K |
| 2026-02-19 |
Seehra Jasbir |
Chief Executive Officer |
Informative Sell |
7,015 |
$16.17 |
$113.43K |
| 2026-02-18 |
Regnante Keith |
Chief Financial Officer |
Informative Sell |
4,739 |
$16.35 |
$77.48K |
| 2026-01-07 |
Seehra Jasbir |
Chief Executive Officer |
RSU Award |
62,500 |
$63.61 |
$3.98M |
| 2025-11-21 |
Knowles Julius |
Director |
Return of Shares |
130,494 |
$17.75 |
$2.32M |
| 2025-11-21 |
Gordon Carl L |
Director |
Return of Shares |
74,465 |
$17.75 |
$1.32M |
| 2025-11-21 |
Orbimed Advisors Llc |
Director |
Return of Shares |
74,465 |
$17.75 |
$1.32M |
| 2025-10-15 |
Pontifax Management 4 G.p. (2015) Ltd. |
10 Percent Owner |
Informative Sell |
155,262 |
$17.75 |
$2.76M |
| 2025-10-15 |
Adar1 Capital Management, Llc |
10 Percent Owner |
Informative Sell |
743,358 |
$17.75 |
$13.19M |
| 2025-09-03 |
Seehra Jasbir |
Chief Executive Officer |
RSU Award |
90,500 |
- |
- |
| 2025-08-06 |
Cho Esther |
SVP, General Counsel |
Unknown |
50,000 |
$54.38 |
$2.72M |
| 2025-08-06 |
Lerner Lorena Raquel |
Chief Science Officer |
Unknown |
10,879 |
$43.99 |
$478.57K |
| 2025-06-20 |
Adar1 Capital Management, Llc |
10 Percent Owner |
Option Exercise (ITM) |
1 |
$60.00 |
$60.00 |
| 2025-05-16 |
Adar1 Capital Management, Llc |
10 Percent Owner |
Option Expired |
178 |
$10.00 |
$1.78K |
| 2025-06-04 |
Nussbaum Ran |
Officer |
Unknown |
- |
- |
- |
| 2025-06-04 |
Kariv Tomer |
Officer |
Unknown |
- |
- |
- |
| 2025-06-04 |
Knowles Julius |
Director |
RSU Award |
5,250 |
- |
- |
