Keros Therapeutics, Inc. (KROS)
Keros Therapeutics, Inc. (KROS) Insider Trading
Directors, officers and holders of more than 10% of KROS report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 96 transactions on file: 6 with code P, 15 with code S and 29 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 18, 2026 | Newton Charles W. | Director | S Sale | 551 | $10.30 | $5,675 |
| Aug 18, 2026 | Cho Esther | Chief Legal Officer | S Sale | 4,485 | $10.29 | $46,151 |
| Aug 18, 2026 | Lerner Lorena Raquel | Chief Scientific Officer | S Sale | 3,568 | $10.29 | $36,715 |
| Aug 18, 2026 | Tanini Annita | Corp. Controller & VP, Finance | S Sale | 1,224 | $10.29 | $12,595 |
| Aug 17, 2026 | BIENAIME JEAN JACQUES | Director | P Purchase | 1,000 | $10.27 | $10,270 |
| Jul 15, 2026 | BIENAIME JEAN JACQUES | Director | P Purchase | 1,000 | $10.61 | $10,610 |
| Jul 1, 2026 | Prener Anne | Director | A Award | 14,870 | Not measured | Not measured |
| Jul 1, 2026 | Prener Anne | Director | A Award | 13,786 | Not measured | Not measured |
| Jun 15, 2026 | BIENAIME JEAN JACQUES | Director | P Purchase | 1,000 | $10.19 | $10,190 |
| Jun 11, 2026 | Newton Charles W. | Director | S Sale | 550 | $10.04 | $5,522 |
| Jun 4, 2026 | Farzan Nima | Director | S Sale | 2,625 | $10.73 | $28,166 |
| Jun 4, 2026 | Seth Alpna | Director | S Sale | 2,625 | $10.72 | $28,140 |
| Jun 4, 2026 | Knowles Julius | Director | S Sale | 2,625 | $10.73 | $28,166 |
| Jun 3, 2026 | Knowles Julius | Director | A Award | 7,433 | Not measured | Not measured |
| Jun 3, 2026 | Farzan Nima | Director | A Award | 7,433 | Not measured | Not measured |
| Jun 3, 2026 | BIENAIME JEAN JACQUES | Director | A Award | 7,433 | Not measured | Not measured |
| Jun 3, 2026 | GRAY MARY ANN | Director | A Award | 7,433 | Not measured | Not measured |
| Jun 3, 2026 | Seth Alpna | Director | A Award | 7,433 | Not measured | Not measured |
| Jun 3, 2026 | Knowles Julius | Director | A Award | 7,142 | Not measured | Not measured |
| Jun 3, 2026 | Farzan Nima | Director | A Award | 7,142 | Not measured | Not measured |
| Jun 3, 2026 | Seth Alpna | Director | A Award | 7,142 | Not measured | Not measured |
| Jun 3, 2026 | GRAY MARY ANN | Director | A Award | 7,142 | Not measured | Not measured |
| Jun 3, 2026 | BIENAIME JEAN JACQUES | Director | A Award | 7,142 | Not measured | Not measured |
| May 15, 2026 | BIENAIME JEAN JACQUES | Director | P Purchase | 1,000 | $10.58 | $10,580 |
| Apr 15, 2026 | BIENAIME JEAN JACQUES | Director | P Purchase | 1,000 | $11.70 | $11,700 |
| Apr 2, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | M Exercise | 55,000 | $0.3000 | $16,500 |
| Apr 2, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | M Exercise | 55,000 | Not measured | Not measured |
| Mar 9, 2026 | Newton Charles W. | Director | A Award | 14,788 | Not measured | Not measured |
| Mar 9, 2026 | Newton Charles W. | Director | A Award | 13,215 | Not measured | Not measured |
| Mar 9, 2026 | BIENAIME JEAN JACQUES | Director | P Purchase | 2,000 | $11.21 | $22,420 |
| Feb 24, 2026 | Cho Esther | Chief Legal Officer | A Award | 80,000 | Not measured | Not measured |
| Feb 24, 2026 | Cho Esther | Chief Legal Officer | A Award | 80,000 | Not measured | Not measured |
| Feb 24, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A Award | 217,000 | Not measured | Not measured |
| Feb 24, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A Award | 100,000 | Not measured | Not measured |
| Feb 24, 2026 | Lerner Lorena Raquel | Chief Scientific Officer | A Award | 75,000 | Not measured | Not measured |
| Feb 24, 2026 | Regnante Keith | CHIEF FINANCIAL OFFICER | A Award | 60,000 | Not measured | Not measured |
| Feb 19, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | S Sale | 7,015 | $16.17 | $113,433 |
| Feb 18, 2026 | Regnante Keith | CHIEF FINANCIAL OFFICER | S Sale | 4,739 | $16.35 | $77,483 |
| Feb 18, 2026 | Cho Esther | Chief Legal Officer | S Sale | 4,745 | $16.35 | $77,581 |
| Feb 18, 2026 | Lerner Lorena Raquel | Chief Scientific Officer | S Sale | 3,873 | $16.35 | $63,324 |
| Jan 7, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A Award | 62,500 | Not measured | Not measured |
| Nov 21, 2025 | GORDON CARL L | Director | D Disposition | 74,465 | $17.75 | $1,321,754 |
| Nov 21, 2025 | GORDON CARL L | Director | D Disposition | 140,057 | $17.75 | $2,486,012 |
| Nov 21, 2025 | ORBIMED ADVISORS LLC | Director | D Disposition | 140,057 | $17.75 | $2,486,012 |
| Nov 21, 2025 | ORBIMED ADVISORS LLC | Director | D Disposition | 74,465 | $17.75 | $1,321,754 |
| Nov 21, 2025 | Knowles Julius | Director | D Disposition | 130,494 | $17.75 | $2,316,269 |
| Nov 21, 2025 | Knowles Julius | Director | D Disposition | 191,527 | $17.75 | $3,399,604 |
| Oct 15, 2025 | ADAR1 Capital Management, LLC | 10% Owner | S Sale | 4,391,237 | $17.75 | $77,944,457 |
| Oct 15, 2025 | Pontifax Management 4 G.P. (2015) Ltd. | 10% Owner | S Sale | 2,284,612 | $17.75 | $40,551,863 |
| Oct 15, 2025 | Pontifax Management 4 G.P. (2015) Ltd. | 10% Owner | S Sale | 1,121,045 | $17.75 | $19,898,549 |
The full Form 4 history is on the KROS company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.