Insider Buying Report: May 2026

Every open-market insider purchase disclosed to the SEC in May 2026, with executive buying kept separate from fund and 10%-owner flows.

Data as of Aug 15 · Source: SEC EDGAR

Executive buying

$558.2M

officers + directors · 1.4K buys

10%-owner & institutional

$2.3B

funds, PE, IPO/financing

Companies bought

497

by executives

Executives buying

856

distinct individuals

May 2026 in one paragraph

In May 2026, 856 U.S. company officers and directors bought $558.2M of their own stock on the open market, across 497 companies. Separately, 10%-owners and institutions filed $2.3B, largely IPO and financing positions rather than open-market conviction.

As of Aug 15. Source: Tracefour, SEC EDGAR Form 4 filings.

Biggest executive buys · May 2026

  1. 1PSUSACKMAN WILLIAM A$175.0M
  2. 2PSUSACKMAN WILLIAM A$42.0M
  3. 3PSUSISRAEL RYAN$25.0M
  4. 4PSUSACKMAN WILLIAM A$21.0M
  5. 5FBINGARDEN EDWARD P$13.5M
  6. 6PSUSHakim Ben$12.5M
  7. 7PSUSBotta Nicholas Anthony$12.5M
  8. 8PSUSCoussin Halit$10.0M
  9. 9WCNMITTELSTAEDT RONALD J$7.6M
  10. 10MRPRichman Darren$5.3M

Most-bought by executives · May 2026

  1. 1PSUSPershing Square USA, Ltd.6 buyers$306.0M
  2. 2FBINFortune Brands Innovations, Inc.1 buyer$15.7M
  3. 3SRADSportradar Group AG7 buyers$11.3M
  4. 4NOMDNomad Foods Ltd4 buyers$9.2M
  5. 5WCNWaste Connections, Inc.1 buyer$7.6M
  6. 6EROKEagleRock Land, LLC4 buyers$6.8M
  7. 7MRPMillrose Properties, Inc.4 buyers$6.6M
  8. 8ONONOn Holding AG3 buyers$6.6M
  9. 9GEHCGE HealthCare Technologies Inc.6 buyers$6.1M
  10. 10TKOTKO Group Holdings, Inc.4 buyers$5.5M

Biggest 10%-owner & institutional buys · May 2026

Funds, PE and strategic holders. These are often IPO or private-placement positions, not open-market conviction.

  1. 1RIVNVOLKSWAGEN AG$999.9M
  2. 2BXDCBlackstone Treasury Holdings III L.L.C.$182.2M
  3. 3LILAMALONE JOHN C$106.5M
  4. 4ARTVRA CAPITAL MANAGEMENT, L.P.$75.0M
  5. 5BRCBCynosure Group, LLC$64.4M
  6. 6COAGRA CAPITAL MANAGEMENT, L.P.$45.7M
  7. 7RSGCASCADE INVESTMENT, L.L.C.$35.1M
  8. 8RSGCASCADE INVESTMENT, L.L.C.$31.4M
  9. 9ODTXTPG GP A, LLC$25.0M
  10. 10LNBIXLincoln Financial Investments Corp$25.0M

How May 2026's buys have played out

Price change from each trade to the most recent close, for the month's largest executive buys and sells.

Executives bought

+7.7% median since

22 stocks · 64% now higher

Executives sold

+1.1% median since

26 stocks · 50% now higher

Gained since the buy
  • FBINFortune Brands Innovations, Inc.
    Bought ~$33.39 (May 19)→ $47.84
    +43.3%
  • SCHWSCHWAB CHARLES CORP
    Bought ~$85.35 (May 28)→ $111.09
    +30.2%
  • HUBSHUBSPOT INC
    Bought ~$179.58 (May 12)→ $224.14
    +24.8%
  • NOMDNomad Foods Ltd
    Bought ~$9.48 (May 11)→ $11.73
    +23.7%
  • CDWCDW Corp
    Bought ~$114.19 (May 27)→ $139.42
    +22.1%
Fell since the buy
  • UCARU Power Ltd
    Bought ~$1.61 (May 6)→ $0.66
    -59.0%
  • ONONOn Holding AG
    Bought ~$36.84 (May 14)→ $32.22
    -12.5%
  • BKKTBakkt, Inc.
    Bought ~$8.28 (May 15)→ $7.65
    -7.6%
  • CSGPCOSTAR GROUP, INC.
    Bought ~$34.72 (May 1)→ $32.38
    -6.7%
  • PSUSPershing Square USA, Ltd.
    Bought ~$42.71 (Apr 30)→ $40.26
    -5.7%

Price change from the market close on the disclosed trade date to the most recent close. Stocks that split in between are excluded. Cohort figures are medians across the month's largest trades (small sample). Historical price movement only, not a prediction, signal, or recommendation.

Repeat buyers of May 2026

Executives who made two or more open-market buys of $100K+ during May 2026, ranked by the median price change since each buy. Every name links to their full filing history.

Strongest track records
Weakest track records

Median price change from each buy's trade-date close to the most recent close. Buys under 7 days old and stocks that split in between are excluded. A track record is past filings and price history, not a prediction of an insider's future trades or of stock performance.

Cite this report

U.S. company officers and directors bought $558.2M of their own companies' stock across 497 companies in May 2026, according to SEC Form 4 filings aggregated by Tracefour.

Method: open-market purchases (code P) by officers and directors, one row per economic trade, from public EDGAR filings. Source link for attribution: https://tracefour.com/insider-trading-statistics/2026-05

Questions & answers

How much stock did company insiders buy in May 2026?
In May 2026, U.S. company officers and directors bought $558.2M of their own companies' stock on the open market, across 497 companies. A further $2.3B was filed by 10%-owners and institutions, largely IPO and financing positions rather than open-market conviction buys.
What was the biggest insider buy in May 2026?
The largest open-market executive purchase disclosed in May 2026 was ACKMAN WILLIAM A's $175.0M buy of PSUS (Pershing Square USA, Ltd.), filed with the SEC on Form 4.
Which sectors did executives buy the most in May 2026?
The most executive buying in May 2026 by dollar value was in Unclassified: $310.1M, about 56% of the month's executive purchases.
Does a stock go up after insiders buy it?
Not reliably. Insider buying is one public data point, not a forecast. Historically some stocks rise after insider purchases and others fall. Tracefour shows what was filed and how prices have moved since. It does not predict prices or give investment advice.
Data sourced from public SEC EDGAR Form 4 filings. Not investment advice.