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Keros Therapeutics, Inc.

KROS Net selling
CIK 0001664710 #3893 in the set updated 17 Sep 2026
Bought (120 mo)
$55.73M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$242.31M
$95.67K on a plan · $10.38M straight out of an exercise
Sold at will
$231.83M
274 of 351 sales
Net
−$186.58M
−$176.10M against sales at will

By person

24 insiders · 403 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
ADAR1 Capital Management, LLC entity
10% owner
$9.46M (5)
$95.66M (3)
−$86.19M
0
$0.00
−100.0%
Pontifax Management 4 G.P. (2015) Ltd. entity
10% owner
$10.00M (8)
$84.98M (4)
−$74.98M
155,262
$1.60M
−82.9%
Knowles Julius
Director
$24.99K (1)
$28.79M (257)
−$28.76M
458,776
$4.73M
+7.7%
Kariv Tomer
Director
$10.00M (8)
+$10.00M
1,386,924
$14.29M
Nussbaum Ran
Director
$10.00M (8)
+$10.00M
1,386,924
$14.29M
Lachey Jennifer
Chief Scientific Officer
$6.26M (47) scheduled
−$6.26M
95,100
$979.53K
+239.8%
GORDON CARL L
Director
$6.00M (1)
$11.00M (2)
−$5.00M
1,170,119
$12.05M
+224.4%
ORBIMED ADVISORS LLC entity
Director
$6.00M (1)
$11.00M (2)
−$5.00M
1,164,869
$12.00M
+223.0%
Regnante Keith
CHIEF FINANCIAL OFFICER
$3.75M (7) scheduled
−$3.75M
39,261
$404.39K
Arkin Bio Ventures Limited Partnership entity
10% owner
$1.92M (1)
+$1.92M
2,013,102
$20.73M
Lazarus Alon
Director
$1.92M (1)
+$1.92M
2,036,140
$20.97M
+8,738%
Ordonez Claudia
Chief Medical Officer
$290.46K (13) scheduled
−$290.46K
0
$0.00
Seehra Jasbir
CHIEF EXECUTIVE OFFICER
$320.00K (1)
$113.43K (1)
+$206.57K
440,708
$4.54M
+107.2%
Rovaldi Christopher
Chief Operating Officer
$162.00K (6) scheduled
−$162.00K
60,000
$618.00K
Cho Esther
Chief Legal Officer
$123.73K (2)
−$123.73K
35,770
$368.43K
−20.5%
Lerner Lorena Raquel
Chief Scientific Officer
$100.04K (2)
−$100.04K
27,559
$283.86K
−21.3%
BIENAIME JEAN JACQUES
Director
$75.77K (6)
+$75.77K
19,592
$201.80K
+9,696%
Farzan Nima
Director
$28.17K (1) scheduled
−$28.17K
9,767
$100.60K
Seth Alpna
Director
$28.14K (1) scheduled
−$28.14K
9,767
$100.60K
Tanini Annita
Corp. Controller & VP, Finance
$12.59K (1)
−$12.59K
45,144
$464.98K
−2.6%
Newton Charles W.
Director
$11.20K (2) scheduled
−$11.20K
12,114
$124.77K
CHYUNG YUNG H.
Chief Medical Officer
44,000
$453.20K
Prener Anne
Director
13,786
$142.00K
GRAY MARY ANN
Director
12,392
$127.64K

No percentages here. This company's share count has moved by a factor of 2.1 over the window, from 19,717,533 to 40,615,414 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Regnante Keith
4 Nov 2023
Chief Financial Officer
Sold after exercise
40,000
$45.29
$1.81M
Regnante Keith
9 Jun 2023
Chief Financial Officer
Sold after exercise
2,579
$47.25
$121.86K
Regnante Keith
9 Jun 2023
Chief Financial Officer
Sold after exercise
1,428
$46.46
$66.34K
Regnante Keith
9 Jun 2023
Chief Financial Officer
Sold after exercise
15,993
$45.03
$720.16K
Regnante Keith
8 Jun 2023
Chief Financial Officer
Sold after exercise
2,699
$48.65
$131.31K
Regnante Keith
8 Jun 2023
Chief Financial Officer
Sold after exercise
17,301
$47.66
$824.57K
Lachey Jennifer
15 Jul 2022
Chief Scientific Officer
Sold after exercise
46,034
$30.00
$1.38M
Lachey Jennifer
13 Jul 2022
Chief Scientific Officer
Sold after exercise
1,916
$30.00
$57.48K
Lachey Jennifer
11 May 2022
Chief Scientific Officer
Sold after exercise
16
$45.45
$727.20
Lachey Jennifer
11 May 2022
Chief Scientific Officer
Sold after exercise
223
$44.23
$9.86K
Lachey Jennifer
11 May 2022
Chief Scientific Officer
Sold after exercise
719
$43.32
$31.15K
Lachey Jennifer
11 May 2022
Chief Scientific Officer
Sold after exercise
944
$42.49
$40.11K
Lachey Jennifer
11 May 2022
Chief Scientific Officer
Sold after exercise
3,398
$41.26
$140.20K
Lachey Jennifer
11 Apr 2022
Chief Scientific Officer
Sold after exercise
559
$64.15
$35.86K
Lachey Jennifer
11 Apr 2022
Chief Scientific Officer
Sold after exercise
2,315
$63.50
$147.00K
Lachey Jennifer
11 Apr 2022
Chief Scientific Officer
Sold after exercise
1,009
$62.32
$62.88K
Lachey Jennifer
11 Apr 2022
Chief Scientific Officer
Sold after exercise
1,417
$61.37
$86.96K
Rovaldi Christopher
6 Apr 2022
Chief Operating Officer
Sold after exercise
1,728
$65.00
$112.32K
Lachey Jennifer
4 Apr 2022
Chief Scientific Officer
Sold after exercise
7,950
$60.00
$477.00K
Rovaldi Christopher
1 Apr 2022
Chief Operating Officer
Sold after exercise
105
$58.83
$6.18K
Rovaldi Christopher
1 Apr 2022
Chief Operating Officer
Sold after exercise
366
$57.97
$21.22K
Rovaldi Christopher
1 Apr 2022
Chief Operating Officer
Sold after exercise
287
$56.89
$16.33K
Rovaldi Christopher
1 Apr 2022
Chief Operating Officer
Sold after exercise
104
$56.20
$5.84K
Rovaldi Christopher
1 Apr 2022
Chief Operating Officer
Sold after exercise
2
$54.34
$108.68
Lachey Jennifer
11 Mar 2022
Chief Scientific Officer
Sold after exercise
875
$54.54
$47.72K
Lachey Jennifer
11 Mar 2022
Chief Scientific Officer
Sold after exercise
713
$53.36
$38.05K
Lachey Jennifer
11 Mar 2022
Chief Scientific Officer
Sold after exercise
1,062
$52.43
$55.68K
Lachey Jennifer
11 Feb 2022
Chief Scientific Officer
Sold after exercise
199
$53.10
$10.57K
Lachey Jennifer
11 Feb 2022
Chief Scientific Officer
Sold after exercise
1,378
$52.35
$72.14K
Lachey Jennifer
11 Feb 2022
Chief Scientific Officer
Sold after exercise
1,073
$51.50
$55.26K
Lachey Jennifer
11 Jan 2022
Chief Scientific Officer
Sold after exercise
1,134
$54.45
$61.75K
Lachey Jennifer
11 Jan 2022
Chief Scientific Officer
Sold after exercise
1,196
$53.56
$64.06K
Lachey Jennifer
11 Jan 2022
Chief Scientific Officer
Sold after exercise
320
$52.01
$16.64K
Lachey Jennifer
5 Jan 2022
Chief Scientific Officer
Sold after exercise
2,650
$60.00
$159.00K
Lachey Jennifer
15 Dec 2021
Chief Scientific Officer
Sold after exercise
735
$50.00
$36.75K
Lachey Jennifer
13 Dec 2021
Chief Scientific Officer
Sold after exercise
7
$53.64
$375.48
Lachey Jennifer
13 Dec 2021
Chief Scientific Officer
Sold after exercise
390
$52.22
$20.37K
Lachey Jennifer
13 Dec 2021
Chief Scientific Officer
Sold after exercise
1,518
$50.11
$76.07K
Lachey Jennifer
11 Nov 2021
Chief Scientific Officer
Sold after exercise
4,561
$59.78
$272.66K
Lachey Jennifer
11 Nov 2021
Chief Scientific Officer
Sold after exercise
739
$58.73
$43.40K
Lachey Jennifer
10 Nov 2021
Chief Scientific Officer
Sold after exercise
15,900
$60.00
$954.00K
Lachey Jennifer
4 Nov 2021
Chief Scientific Officer
Sold after exercise
10,600
$50.00
$530.00K
Ordonez Claudia
11 Jun 2021
Chief Medical Officer
Sold after exercise
347
$51.95
$18.03K
Ordonez Claudia
11 Jun 2021
Chief Medical Officer
Sold after exercise
653
$50.48
$32.96K
Lachey Jennifer
11 Jun 2021
Chief Scientific Officer
Sold after exercise
219
$52.13
$11.42K
Lachey Jennifer
11 Jun 2021
Chief Scientific Officer
Sold after exercise
898
$51.73
$46.45K
Lachey Jennifer
11 Jun 2021
Chief Scientific Officer
Sold after exercise
1,533
$50.37
$77.22K
Lachey Jennifer
11 May 2021
Chief Scientific Officer
Sold after exercise
2,650
$50.00
$132.50K
Ordonez Claudia
11 May 2021
Chief Medical Officer
Sold after exercise
1,000
$50.15
$50.15K
Lachey Jennifer
12 Apr 2021
Chief Scientific Officer
Sold after exercise
100
$61.72
$6.17K
Lachey Jennifer
12 Apr 2021
Chief Scientific Officer
Sold after exercise
729
$61.08
$44.53K
Lachey Jennifer
12 Apr 2021
Chief Scientific Officer
Sold after exercise
3,473
$59.99
$208.35K
Lachey Jennifer
12 Apr 2021
Chief Scientific Officer
Sold after exercise
998
$59.10
$58.98K
Ordonez Claudia
12 Apr 2021
Chief Medical Officer
Sold after exercise
233
$61.23
$14.27K
Ordonez Claudia
12 Apr 2021
Chief Medical Officer
Sold after exercise
367
$60.01
$22.02K
Ordonez Claudia
12 Apr 2021
Chief Medical Officer
Sold after exercise
400
$59.09
$23.64K
Showing 250 of 403 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 174
Amendments (4/A) skipped 4
Filings about a different issuer 0
Unreadable filings 0
Joint filings 14
Sales on a Rule 10b5-1 plan 5
Sales straight out of an exercise 72
Sales at will 274
Transactions with no price 0
Shares from compensation/vesting 18,653,788
Sales filed before the plan box existed 256
History held since 8 Apr 2020