Top insider buys: May 18 – May 24, 2026

The largest open-market purchases company insiders reported on SEC Form 4 between May 18 – May 24, 2026.

Week 21, 2026

#CompanyWho boughtSharesValueSource
1BRCB

Black Rock Coffee Bar, Inc.

2 officers/directors

Cluster buy

Geyer Clay Howard, Cynosure Group, LLC

13,688,717

$73.3M

SEC filings
2SHAK

Shake Shack Inc.

5 officers/directors

Cluster buy

Silverman Josh, Chapman Charles J III, Balbale Sumaiya, Lynch Robert, Meyer Daniel Harris

51,616

$3.2M

SEC filings
3AMRZ

Amrize Ltd

2 officers/directors

Cluster buy

Gross Mario, Jenisch Jan Philipp

51,418

$2.5M

SEC filings
4ADC

AGREE REALTY CORP

2 officers/directors

Cluster buy

RAKOLTA JOHN JR, Agree Joey

33,295

$2.5M

SEC filings
5TLSI

TriSalus Life Sciences, Inc.

3 officers/directors

Cluster buy

Wahlstrom Mats, Stansky Michael P, Szela Mary T

709,682

$1.8M

SEC filings
6NCLH

Norwegian Cruise Line Holdings Ltd.

2 officers/directors

Cluster buy

COHEN JONATHAN Z, Cil Jose E.

45,000

$700K

SEC filings
7AMST

Amesite Inc.

2 officers/directors

Cluster buy

Sastry Ann Marie, Parmer George

418,118

$600K

SEC filings
8KBR

KBR, INC.

2 officers/directors

Cluster buy

MOORE JACK B, Sabater Carlos A.

18,500

$597K

SEC filings
9LMRI

Lumexa Imaging Holdings, Inc.

2 officers/directors

Cluster buy

BRODNAX BRETT, Cooper Henry Lee

65,000

$477K

SEC filings
10BSX

BOSTON SCIENTIFIC CORP

2 officers/directors

Cluster buy

LUDWIG EDWARD J, Habiger David C

8,030

$454K

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.