Insider Buying Report: September 2026

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

Data as of Oct 22 · Source: SEC EDGAR

Executive buying

$360.3M

officers + directors · 1.0K buys

10%-owner & institutional

$1.8B

funds, PE, IPO/financing

Companies bought

368

by executives

Executives buying

583

distinct individuals

September 2026 in one paragraph

In September 2026, 583 U.S. company officers and directors bought $360.3M of their own stock on the open market, across 368 companies. Separately, 10%-owners and institutions filed $1.8B, largely IPO and financing positions rather than open-market conviction.

As of Oct 22. Source: Tracefour, SEC EDGAR Form 4 filings.

Biggest executive buys · September 2026

  1. 1FTKWilks Matthew$34.3M
  2. 2GRABTan Anthony Ping Yeow$29.9M
  3. 3GMECohen Ryan$26.4M
  4. 4GMECohen Ryan$20.4M
  5. 5AUGOSousa Mauad Bruno$11.3M
  6. 6GMECohen Ryan$10.5M
  7. 7FOXMURDOCH LACHLAN K$10.3M
  8. 8UBERKHOSROWSHAHI DARA$10.0M
  9. 9CXZambrano Lozano Rogelio$6.9M
  10. 10LILADE ANGOITIA ALFONSO$6.6M

Most-bought by executives · September 2026

  1. 1GMEGameStop Corp.4 buyers$59.1M
  2. 2FTKFLOTEK INDUSTRIES INC1 buyer$34.3M
  3. 3GRABGrab Holdings Ltd2 buyers$30.7M
  4. 4BBDBANK BRADESCO20 buyers$26.6M
  5. 5AUGOAura Minerals Inc.1 buyer$21.8M
  6. 6UBERUber Technologies, Inc2 buyers$15.3M
  7. 7ALMSALUMIS INC.1 buyer$10.7M
  8. 8FOXFox Corp1 buyer$10.3M
  9. 9KBDCKayne Anderson BDC, Inc.1 buyer$10.0M
  10. 10LILALiberty Latin America Ltd.1 buyer$10.0M

Biggest 10%-owner & institutional buys · September 2026

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

  1. 1PBLSXBlueArc Capital Management, LLC$99.4M
  2. 2RSGCASCADE INVESTMENT, L.L.C.$59.8M
  3. 3RSGCASCADE INVESTMENT, L.L.C.$57.0M
  4. 4RSGCASCADE INVESTMENT, L.L.C.$55.4M
  5. 5LENBERKSHIRE HATHAWAY INC$52.1M
  6. 6RSGCASCADE INVESTMENT, L.L.C.$47.2M
  7. 7LENBERKSHIRE HATHAWAY INC$43.5M
  8. 8PBLSXBlueArc Capital Management, LLC$40.0M
  9. 9RSGCASCADE INVESTMENT, L.L.C.$39.4M
  10. 10RSGCASCADE INVESTMENT, L.L.C.$34.5M

How September 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

-2.6% median since

22 stocks · 36% now higher

Executives sold

-8.4% median since

19 stocks · 26% now higher

Gained since the buy
  • BBDBANK BRADESCO
    Bought ~$3.43 (Sep 18)→ $4.05
    +18.1%
  • GMEGameStop Corp.
    Bought ~$22.76 (Sep 21)→ $26.29
    +15.5%
  • NYAXNayax Ltd.
    Bought ~$44.75 (Sep 24)→ $49.17
    +9.9%
  • HHHHoward Hughes Holdings Inc.
    Bought ~$63.75 (Sep 23)→ $69.49
    +9.0%
  • CXCEMEX SAB DE CV
    Bought ~$9.71 (Sep 25)→ $10.39
    +7.0%
Fell since the buy
  • ALMSALUMIS INC.
    Bought ~$10.58 (Sep 8)→ $6.81
    -35.6%
  • ANGXAngel Studios, Inc.
    Bought ~$5.38 (Sep 10)→ $3.49
    -35.1%
  • FTKFLOTEK INDUSTRIES INC
    Bought ~$27.33 (Sep 11)→ $23.20
    -15.1%
  • TPVGTriplePoint Venture Growth BDC Corp.
    Bought ~$4.85 (Sep 18)→ $4.23
    -12.8%
  • SBLKStar Bulk Carriers Corp.
    Bought ~$31.21 (Sep 15)→ $28.82
    -7.7%

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 September 2026

Executives who made two or more open-market buys of $100K+ during September 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 $360.3M of their own companies' stock across 368 companies in September 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/2026-09

Questions & answers

How much stock did company insiders buy in September 2026?
In September 2026, U.S. company officers and directors bought $360.3M of their own companies' stock on the open market, across 368 companies. A further $1.8B 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 September 2026?
The largest open-market executive purchase disclosed in September 2026 was Wilks Matthew's $34.3M buy of FTK (FLOTEK INDUSTRIES INC), filed with the SEC on Form 4.
Which sectors did executives buy the most in September 2026?
The most executive buying in September 2026 by dollar value was in Retail Trade: $66.0M, about 18% 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.