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

#	Company	Who bought	Shares	Value	Source
1	FSBC FIVE STAR BANCORP	5 officers/directors Cluster buy Larry Eugene Allbaugh, Robert Truxtun Perry-Smith, Shannon Deary-Bell, Judson Teichert Riggs, Kevin Francis Ramos	141,591	$6.2M	SEC filings
2	TSM TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD	2 officers/directors Cluster buy Bor-Zen Tien, Shyue-Shyh Lin	9,010	$663K	SEC filings
3	RBKB Rhinebeck Bancorp, Inc.	3 officers/directors Cluster buy Suzanne Loughlin, Nancy Koskey Patzwahl, Matthew James Smith	49,925	$597K	SEC filings
4	COE 51Talk Online Education Group	Chief Executive Officer Jack Jiajia Huang	1,117,500	$19.0M	SEC filings
5	Blackstone Private Real Estate Credit & Income Fund	10% Owner Blackstone Private Multi-Asset Credit & Income Fund	573,614	$15.0M	SEC filings
6	CBIO CRESCENT BIOPHARMA, INC.	Director Fairmount Funds Management LLC	853,450	$12.4M	SEC filings
7	PBLS Parabilis Medicines, Inc.	Director RA CAPITAL MANAGEMENT, L.P.	244,593	$6.9M	SEC filings
8	ENR ENERGIZER HOLDINGS, INC.	10% Owner Aqua Capital, Ltd.	220,000	$4.5M	SEC filings
9	ARTV Artiva Biotherapeutics, Inc.	Director RA CAPITAL MANAGEMENT, L.P.	424,940	$4.0M	SEC filings
10	ZSTK ZeroStack Corp.	Executive Chairman Michael Heinrich	4,608,575	$3.5M	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.