Top insider buys: Jul 20 – Jul 26, 2026

The largest open-market purchases company insiders reported on SEC Form 4 between Jul 20 – Jul 26, 2026.

Week 30, 2026

#CompanyWho boughtSharesValueSource
1FSBC

FIVE STAR BANCORP

5 officers/directors

Cluster buy

Allbaugh Larry Eugene, Perry-Smith Robert Truxtun, Deary-Bell Shannon, Riggs Judson Teichert, Ramos Kevin Francis

141,591

$6.2M

SEC filings
2TSM

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD

2 officers/directors

Cluster buy

Tien Bor-Zen, Lin Shyue-Shyh

9,010

$663K

SEC filings
3RBKB

Rhinebeck Bancorp, Inc.

3 officers/directors

Cluster buy

Loughlin Suzanne, Patzwahl Nancy Koskey, Smith Matthew James

49,925

$597K

SEC filings
4CAPS

Capstone Holding Corp.

2 officers/directors

Cluster buy

TOPOREK MICHAEL, Lipman Matthew E.

83,500

$334K

SEC filings
5COE

51Talk Online Education Group

Chief Executive Officer

Huang Jack Jiajia

1,117,500

$19.0M

SEC filings
6Blackstone Private Real Estate Credit & Income Fund

10% Owner

Blackstone Private Multi-Asset Credit & Income Fund

573,614

$15.0M

SEC filings
7CBIO

CRESCENT BIOPHARMA, INC.

Director

Fairmount Funds Management LLC

853,450

$12.4M

SEC filings
8PBLS

Parabilis Medicines, Inc.

Director

RA CAPITAL MANAGEMENT, L.P.

244,593

$6.9M

SEC filings
9ENR

ENERGIZER HOLDINGS, INC.

10% Owner

Aqua Capital, Ltd.

220,000

$4.5M

SEC filings
10ARTV

Artiva Biotherapeutics, Inc.

Director

RA CAPITAL MANAGEMENT, L.P.

424,940

$4.0M

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.