Top insider buys: May 5 – May 11, 2025

The largest open-market purchases company insiders reported on SEC Form 4 between May 5 – May 11, 2025.

Week 19, 2025

#CompanyWho boughtSharesValueSource
1HCWB

HCW Biologics Inc.

3 officers/directors

Cluster buy

Hing C. Wong, Scott T. Garrett, Rebecca Byam

106,347

$2.8M

SEC filings
2ALMS

ALUMIS INC.

2 officers/directors

Cluster buy

James B. Tananbaum, Foresite Labs, LLC, Foresite Capital Management VI LLC, Srinivas Akkaraju

365,290

$1.7M

+$405K by large holders

SEC filings
3CHDN

Churchill Downs Inc

3 officers/directors

Cluster buy

Douglas C. Grissom, R. Alex Rankin, Paul C. Varga

14,000

$1.3M

SEC filings
4BNL

Broadstone Net Lease, Inc.

6 officers/directors

Cluster buy

Ryan M. Albano, Laura L. Felice, Joseph Saffire, John David Moragne, Laurie A. Hawkes, Michael A. Coke

59,250

$961K

SEC filings
5LINE

Lineage, Inc.

2 officers/directors

Cluster buy

Kevin Patrick Marchetti, Sudarsan Thattai V

15,920

$703K

SEC filings
6VSTS

Vestis Corp

2 officers/directors

Cluster buy

Douglas A. Pertz, Richard L. Burke Jr.

88,382

$537K

SEC filings
7HTGC

Hercules Capital, Inc.

5 officers/directors

Cluster buy

Nikos Theodosopoulos, Wade Loo, Gayle A. Crowell, DeAnne Aguirre, Thomas J. Fallon

29,972

$524K

SEC filings
8WSBK

Winchester Bancorp, Inc./MD/

2 officers/directors

Cluster buy

William Preston Hood, John A. Carroll

45,000

$437K

SEC filings
9OGN

Organon & Co.

2 officers/directors

Cluster buy

Matthew M. Walsh, Kevin Ali

45,400

$400K

SEC filings
10RGR

STURM RUGER & CO INC

2 officers/directors

Cluster buy

Phillip Widman, John A. Cosentino Jr.

12,000

$399K

SEC filings

Source: SEC Form 4 filings, aggregated per company over the week. Open-market purchases of $100K or more only; grants, awards, option exercises and likely IPO or offering allocations are excluded. Cluster buys (two or more officers or directors buying) rank first, then by dollar value.

Not investment advice. This page reports public SEC data and is not a recommendation to buy or sell any security.