KROS
KEROS THERAP (KROS)
NASDAQ
$11.38+$0.12 (+1.07%)
Price as of Oct 02, 2026 5:49 PM EDT
  • $223.3M
    Market Cap
  • -27.73%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
14.09%
2.8M
+382,424 (+13.69%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
13.77%
2.7M
+96,670 (+3.54%)
Dec 31, 2024
BLACKROCK INC.
12.68%
2.5M
+347,234 (+13.82%)
Jun 30, 2024
VANGUARD GROUP INC
7.69%
1.5M
-1.2M (-78.24%)
Dec 31, 2025
TANG CAPITAL MANAGEMENT LLC
7.16%
1.4M
0 (0.00%)
Sep 30, 2025
NANTAHALA CAPITAL MANAGEMENT, LLC
7.11%
1.4M
+50,000 (+3.55%)
Jun 30, 2026
AQR CAPITAL MANAGEMENT LLC
4.88%
967,859
+561,296 (+57.99%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions479.9M (76.90%)
  • Mutual Funds137.9M (22.10%)
  • Insiders6.2M (0.99%)
  • Other0 (0.00%)

Insider Transactions

  • 0.99% (6.2M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $421,106.82
    Amount of InsiderBuying (last 12 months)
  • 8
    Number of InsiderSelling (last 12 months)
  • $189.0M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Newton Charles W.
Sell
Aug 18, 2026
$5,675.30
551
$10.30
12,114
Cho Esther
Chief Legal Officer
Sell
Aug 18, 2026
$46,150.65
4,485
$10.29
35,770
Lerner Lorena Raquel
Chief Scientific Officer
Sell
Aug 18, 2026
$36,714.72
3,568
$10.29
27,559
Tanini Annita
Corp. Controller & VP, Finance
Sell
Aug 18, 2026
$12,594.96
1,224
$10.29
45,144
BIENAIME JEAN JACQUES
Buy
Aug 17, 2026
$10,270.00
1,000
$10.27
19,592
Prener Anne
Award
Jul 01, 2026
$0.00
14,870
$0.00
14,870
Prener Anne
Award
Jul 01, 2026
$0.00
13,786
$0.00
13,786
BIENAIME JEAN JACQUES
Buy
Jun 15, 2026
$10,190.00
1,000
$10.19
17,592
Newton Charles W.
Sell
Jun 11, 2026
$5,522.00
550
$10.04
12,665
BIENAIME JEAN JACQUES
Buy
Mar 09, 2026
$22,420.00
2,000
$11.21
7,450
Seehra Jasbir
CHIEF EXECUTIVE OFFICER
Award
Feb 24, 2026
$0.00
217,000
$0.00
217,000
Lerner Lorena Raquel
Chief Scientific Officer
Award
Feb 24, 2026
$0.00
75,000
$0.00
75,000
Cho Esther
Chief Legal Officer
Award
Feb 24, 2026
$0.00
80,000
$0.00
80,000
Regnante Keith
CHIEF FINANCIAL OFFICER
Award
Feb 24, 2026
$0.00
60,000
$0.00
60,000
Seehra Jasbir
CHIEF EXECUTIVE OFFICER
Award
Feb 24, 2026
$0.00
100,000
$0.00
100,000
Seehra Jasbir
CHIEF EXECUTIVE OFFICER
Sell
Feb 19, 2026
$113,432.55
7,015
$16.17
385,708
Lerner Lorena Raquel
Chief Science Officer
Sell
Feb 18, 2026
$63,323.55
3,873
$16.35
31,127
Regnante Keith
CHIEF FINANCIAL OFFICER
Sell
Feb 18, 2026
$77,482.65
4,739
$16.35
39,261
Seehra Jasbir
CHIEF EXECUTIVE OFFICER
Award
Jan 07, 2026
$0.00
62,500
$0.00
62,500
Knowles Julius
Return
Nov 21, 2025
$3.4M
191,527
$17.75
150,047
GORDON CARL L
Return
Nov 21, 2025
$2.5M
140,057
$17.75
759,155
Knowles Julius
Return
Nov 21, 2025
$2.3M
130,494
$17.75
102,233
ORBIMED ADVISORS LLC
Return
Nov 21, 2025
$2.5M
140,057
$17.75
759,155
GORDON CARL L
Return
Nov 21, 2025
$1.3M
74,465
$17.75
45,057
ORBIMED ADVISORS LLC
Return
Nov 21, 2025
$1.3M
74,465
$17.75
45,057
ADAR1 Capital Management, LLC
Sell
Oct 15, 2025
$77.9M
4.4M
$17.75
0
Pontifax Management 4 G.P. (2015) Ltd.
Sell
Oct 15, 2025
$40.6M
2.3M
$17.75
0
ADAR1 Capital Management, LLC
Sell
Oct 15, 2025
$4.5M
254,669
$17.75
0
Pontifax Management 4 G.P. (2015) Ltd.
Sell
Oct 15, 2025
$19.9M
1.1M
$17.75
0
ADAR1 Capital Management, LLC
Sell
Oct 15, 2025
$13.2M
743,358
$17.75
0