Top insider buys: Aug 4 – Aug 10, 2025

The largest open-market purchases company insiders reported on SEC Form 4 between Aug 4 – Aug 10, 2025.

Week 32, 2025

#CompanyWho boughtSharesValueSource
1VRTX

VERTEX PHARMACEUTICALS INC / MA

2 officers/directors

Cluster buy

Reshma Kewalramani, Bruce I. Sachs

15,000

$5.8M

SEC filings
2PNFP

PINNACLE FINANCIAL PARTNERS INC

2 officers/directors

Cluster buy

David B. Ingram, G. Kennedy Thompson

32,000

$2.8M

SEC filings
3IFF

INTERNATIONAL FLAVORS & FRAGRANCES INC

2 officers/directors

Cluster buy

Paul J. Fribourg, J. Erik Fyrwald

30,750

$2.0M

SEC filings
4PTLO

Portillo's Inc.

3 officers/directors

Cluster buy

Eugene I. Lee Jr., Michelle Greig Hook, Kelly M. Kaiser

197,250

$1.5M

SEC filings
5NSP

INSPERITY, INC.

4 officers/directors

Cluster buy

Carol R. Kaufman, John L. Lumelleau, Eli Jones, James D. Allison

16,704

$763K

SEC filings
6MKZR

MacKenzie Realty Capital, Inc.

5 officers/directors

Cluster buy

Christine Elizabeth Simpson, Angche Sherpa, Charles E. Patterson II, Glen W. Fuller, Jeri Ruth Bluth

152,540

$671K

SEC filings
7TFX

TELEFLEX INC

4 officers/directors

Cluster buy

Stuart A. Randle, Andrew A. Krakauer, Liam Kelly, Jaewon Ryu

5,000

$576K

SEC filings
8XELB

XCel Brands, Inc.

2 officers/directors

Cluster buy

Loren Robert W. D., Mark DiSanto

216,000

$238K

SEC filings
9SIRI

SIRIUS XM HOLDINGS INC.

10% Owner

BERKSHIRE HATHAWAY INC

5,030,425

$106.5M

SEC filings
10AMKR

AMKOR TECHNOLOGY, INC.

5 separate filers

David D. Kim, SUJODA Investments, LP, Sujoda Management, LLC, John T. Kim, Susan Y. Kim

2,207,945

$48.2M

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.