KROS insider buying and SEC filings, explained
Keros Therapeutics, Inc. · CIK 1664710
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$427K
Planned sales (10b5-1)
$96K
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 18, 2026 | Sale | Annita Tanini (Corp. Controller & VP, Finance) sold 1,224 shares at about $10.29 ($13K). Holdings down 3% to 45,144 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 20, 2026 |
| Aug 18, 2026 | Sale | Esther Cho (Chief Legal Officer) sold 4,485 shares at about $10.29 ($46K). Holdings down 11% to 35,770 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 20, 2026 |
| Aug 18, 2026 | Sale | Lorena Raquel Lerner (Chief Scientific Officer) sold 3,568 shares at about $10.29 ($37K). Holdings down 11% to 27,559 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 20, 2026 |
| Aug 18, 2026 | Planned (10b5-1) | Charles W. Newton (Director) sold 551 shares at about $10.30 ($6K), marked as a 10b5-1 plan trade. Holdings down 4% to 12,114 shares. | SEC filing Filed Aug 20, 2026 |
| Aug 17, 2026 | Purchase (code P) | Jean Jacques Bienaime (Director) bought 1,000 shares at about $10.27 ($10K), reported as a purchase (code P). Holdings up 5% to 19,592 shares. | SEC filing Filed Aug 19, 2026 |
| Jul 15, 2026 | Purchase (code P) | Jean Jacques Bienaime (Director) bought 1,000 shares at about $10.61 ($11K), reported as a purchase (code P). Holdings up 6% to 18,592 shares. | SEC filing Filed Jul 17, 2026 |
| Jun 15, 2026 | Purchase (code P) | Jean Jacques Bienaime (Director) bought 1,000 shares at about $10.19 ($10K), reported as a purchase (code P). Holdings up 6% to 17,592 shares. | SEC filing Filed Jun 17, 2026 |
| Jun 11, 2026 | Planned (10b5-1) | Charles W. Newton (Director) sold 550 shares at about $10.04 ($6K), marked as a 10b5-1 plan trade. Holdings down 4% to 12,665 shares. | SEC filing Filed Jun 15, 2026 |
| Jun 4, 2026 | Planned (10b5-1) | Julius Knowles (Director) sold 2,625 shares at about $10.73 ($28K), marked as a 10b5-1 plan trade. Holdings down 19% to 10,958 shares. | SEC filing Filed Jun 8, 2026 |
| Jun 4, 2026 | Planned (10b5-1) | Nima Farzan (Director) sold 2,625 shares at about $10.73 ($28K), marked as a 10b5-1 plan trade. Holdings down 21% to 9,767 shares. | SEC filing Filed Jun 8, 2026 |
| Jun 4, 2026 | Planned (10b5-1) | Alpna Seth (Director) sold 2,625 shares at about $10.72 ($28K), marked as a 10b5-1 plan trade. Holdings down 21% to 9,767 shares. | SEC filing Filed Jun 5, 2026 |
| May 15, 2026 | Purchase (code P) | Jean Jacques Bienaime (Director) bought 1,000 shares at about $10.58 ($11K), reported as a purchase (code P). Holdings up 12% to 9,450 shares. | SEC filing Filed May 19, 2026 |
| Apr 15, 2026 | Purchase (code P) | Jean Jacques Bienaime (Director) bought 1,000 shares at about $11.70 ($12K), reported as a purchase (code P). Holdings up 13% to 8,450 shares. | SEC filing Filed Apr 17, 2026 |
| Mar 9, 2026 | Purchase (code P) | Jean Jacques Bienaime (Director) bought 2,000 shares at about $11.21 ($22K), reported as a purchase (code P). Holdings up 37% to 7,450 shares. | SEC filing Filed Mar 11, 2026 |
| Feb 19, 2026 | Sale | Jasbir Seehra (CEO and Director) sold 7,015 shares at $16.17 ($113K). Holdings down 2% to 385,708 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 20, 2026 |
| Feb 18, 2026 | Sale | Esther Cho (SVP, General Counsel) sold 4,745 shares at about $16.35 ($78K). Holdings down 11% to 39,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 20, 2026 |
| Feb 18, 2026 | Sale | Lorena Raquel Lerner (Chief Science Officer) sold 3,873 shares at about $16.35 ($63K). Holdings down 11% to 31,127 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 20, 2026 |
| Feb 18, 2026 | Sale | Keith Regnante (CFO) sold 4,739 shares at about $16.35 ($77K). Holdings down 11% to 39,261 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 20, 2026 |
16 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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