Keros Therapeutics, Inc. (KROS) Insider Trading

Over the last 3 months, KROS insiders made 3 open-market buys and 0 sales, a net purchase of $45K (SEC Form 4). Over the last 6 months, 97 institutions increased and 126 reduced their position (13F).

Insider Activity

Sentiment
100/100
Buys (3m)
3
Sells (3m)
0
Net (3m)
$44.7K
Insiders buying
Insider trades by month Buys Sells
Apr
Oct
Feb
Mar
Apr
May
Context3-month price -23.7%Institutions reducing (13F)
DateInsiderTypeSharesPrice
May 19, 2026BIENAIME JEAN JACQUESdirectorBuy1,000$10.58
Apr 17, 2026BIENAIME JEAN JACQUESdirectorBuy1,000$11.70
Apr 6, 2026Seehra Jasbirdirector, officer: CHIEF EXECUTIVE OFFICEROption55,000$0.30
Mar 27, 2026Cho Estherofficer: Chief Legal OfficerGrant80,000$15.52
Mar 11, 2026BIENAIME JEAN JACQUESdirectorBuy2,000$11.21
Mar 11, 2026Newton Charles W.directorGrant14,788$11.35
Mar 11, 2026Newton Charles W.directorGrant13,215
Feb 26, 2026Seehra Jasbirdirector, officer: CHIEF EXECUTIVE OFFICERGrant217,000$15.52
Feb 26, 2026Seehra Jasbirdirector, officer: CHIEF EXECUTIVE OFFICERGrant100,000$15.52
Feb 26, 2026Regnante Keithofficer: CHIEF FINANCIAL OFFICERGrant60,000$15.52
Feb 20, 2026Regnante Keithofficer: CHIEF FINANCIAL OFFICERSell4,739$16.35
Feb 20, 2026Cho Estherofficer: SVP, General CounselSell4,745$16.35
Feb 20, 2026Lerner Lorena Raquelofficer: Chief Science OfficerSell3,873$16.35
Feb 20, 2026Seehra Jasbirdirector, officer: CHIEF EXECUTIVE OFFICERSell7,015$16.17
Jan 9, 2026Seehra Jasbirdirector, officer: CHIEF EXECUTIVE OFFICERGrant62,500$63.61
Oct 17, 2025Pontifax Management 4 G.P. (2015) Ltd.10 percent ownerSell155,262$17.75
Oct 15, 2025ADAR1 Capital Management, LLC10 percent ownerSell743,358$17.75
Sep 5, 2025Seehra Jasbirdirector, officer: CHIEF EXECUTIVE OFFICERGrant90,500
Jun 6, 2025Farzan NimadirectorGrant5,250
Jun 6, 2025Farzan NimadirectorGrant10,500$14.82
Jun 6, 2025GRAY MARY ANNdirectorGrant10,500$14.82
Jun 6, 2025Knowles JuliusdirectorGrant10,500$14.82
Jun 6, 2025BIENAIME JEAN JACQUESdirectorGrant5,250
Jun 6, 2025Kariv Tomerdirector, 10 percent owner: Grant10,500$14.82
Jun 6, 2025GRAY MARY ANNdirectorGrant5,250
Jun 6, 2025GORDON CARL LdirectorGrant5,250
Jun 6, 2025Seth AlpnadirectorGrant5,250
Jun 6, 2025GORDON CARL LdirectorGrant10,500$14.82
Jun 6, 2025Seth AlpnadirectorGrant10,500$14.82
Jun 6, 2025Nussbaum Randirector, 10 percent owner: Grant5,250

Source: KROS SEC Form 4 filings, latest May 19, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their KROS positions over the last 6 months (SEC Form 13F).

Increased
97
New positions
61
Reduced
126
Sold out
68
Largest moves
InstitutionActionSharesFiled
BLACKROCK, INC.Increased2.4MMay 13, 2026
BLACKROCK, INC.Reduced2.3MFeb 12, 2026
VANGUARD GROUP INCReduced1.5MJan 29, 2026
NANTAHALA CAPITAL MANAGEMENT, LLCIncreased1.4MMay 15, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPIncreased1.3MFeb 13, 2026
STATE STREET CORPReduced1.1MFeb 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position831KMay 15, 2026
MADISON AVENUE PARTNERS, LPReduced824KFeb 17, 2026
ORBIMED ADVISORS LLCReduced804KFeb 17, 2026
QUBE RESEARCH & TECHNOLOGIES LTDIncreased784KFeb 17, 2026
JACOBS LEVY EQUITY MANAGEMENT, INCIncreased768KFeb 13, 2026
ORBIMED ADVISORS LLCReduced759KMay 15, 2026
D. E. SHAW & CO., INC.Reduced755KFeb 17, 2026
QUBE RESEARCH & TECHNOLOGIES LTDReduced725KMay 15, 2026
JACOBS LEVY EQUITY MANAGEMENT, INCReduced706KMay 15, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.