Insider buying report — Tuesday, September 29, 2026: 36 open-market buys worth $93.0M
On Tuesday, September 29, 2026 the SEC published 36 open-market insider purchases worth $93.0M across 32 companies, against 17 insider sales of $1M or more worth $161.0M. By dollar value the selling outweighed the buying, which is the usual state of affairs — executives at large companies sell on schedule, and buy only on purpose.
The largest purchase
George Simeon (director · 10% owner) at ADARx Pharmaceuticals, Inc. (ADRX) filed the day's largest purchase: 1,600,000 shares at $17.00, $27.2M in total, transacted on Sep 28, 2026 and filed Sep 29, 2026. What makes it notable: it is this insider's first open-market purchase on record.
Behind it: Sr One Capital Management, Llc at ADRX ($27.2M), Barta Jan at COUR ($11.4M), Cohen Ryan at GME ($10.6M).
Top ten insider buys
| Filed | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-09-29 | George Simeonfirst buy Director · 10% owner | ADRX ADARx Pharmaceuticals, Inc. | Bought | 1,600,000 | $17.00 | $27.2M |
| 2026-09-29 | Sr One Capital Management, Llcfirst buy 10% owner | ADRX ADARx Pharmaceuticals, Inc. | Bought | 1,600,000 | $17.00 | $27.2M |
| 2026-09-29 | Barta Janfirst buydip 10% owner | COUR Coursera, Inc. | Bought | 2,332,742 | $4.87 | $11.4M |
| 2026-09-29 | Cohen RyanclusterCEOchair President, CEO and Chairman | GME GameStop Corp. | Bought | 450,000 | $23.48 | $10.6M |
| 2026-09-29 | Life Insurance Co Nippon 10% owner | CRBG Corebridge Financial, Inc. | Bought | 178,840 | $34.52 | $6.2M |
| 2026-09-29 | Ramin Kamfarclusterdiplargest ever Director | BPRE Bluerock Private Real Estate Fund | Bought | 301,007 | $12.44 | $3.7M |
| 2026-09-29 | Ramin Kamfarclusterfirst buydip Director | BPRE Bluerock Private Real Estate Fund | Bought | 179,763 | $12.00 | $2.2M |
| 2026-09-29 | Mariani Gustavofirst buy Vicepresident | PAM Pampa Energy Inc. | Bought | 25,000 | $78.26 | $2.0M |
| 2026-09-29 | William P Scullydiplargest ever 10% owner | PRTA PROTHENA CORP PUBLIC LTD CO | Bought | 103,500 | $8.60 | $890k |
| 2026-09-29 | Burnham William Lfirst buy Director | HGBL Heritage Global Inc. | Bought | 300,000 | $1.33 | $399k |
Showing 10 of 36 open-market purchases filed on 2026-09-29. The full list, sortable and filterable by role and size, is in the members Filings Browser; the same rows are available as JSON through the API.
Signals in the day's buying
Of the purchases filed: 7 purchases by a chief executive (CTTH, GME, GPUS, MONIX, QTEX, SNES); 6 that belong to an active cluster (BPRE, GME, GPUS, SWZ, VRXA); 17 first-ever purchases by the insider; 18 bought at least 25% below the recent high. These are the flags the members area scores on — a CFO buying with their own money has historically been the strongest single-insider signal, and a cluster of three or more buyers the strongest of all. The cluster guide explains the scoring.
COUR — two years of insider activity on the price
GME — two years of insider activity on the price
CRBG — two years of insider activity on the price
Largest insider sales ($1M and up)
| Filed | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-09-29 | Peng Yongdong Chief Executive Officer | BEKE KE Holdings Inc. | Sold | 16,033,983 | $5.27 | $84.6M |
| 2026-09-29 | Lam Yat Tung Chief Operating Officer | CRDO Credo Technology Group Holding Ltd | Sold | 100,000 | $206.29 | $20.6M |
| 2026-09-29 | Ullal Jayshree CEO and Chairperson | ANET Arista Networks, Inc. | Sold | 62,622 | $211.40 | $13.2M |
| 2026-09-29 | Lazar David E. Chief Executive Officer | ATER Aterian, Inc. | Sold | 1,750,000 | $6.70 | $11.7M |
| 2026-09-29 | Colgrove John Chief Visionary Officer | P Everpure, Inc. | Sold | 93,900 | $124.47 | $11.7M |
The largest sale was Peng Yongdong at KE Holdings Inc. (BEKE), $84.6M. Sales are shown from $1M upward only; below that they are overwhelmingly scheduled 10b5-1 plans and tax-driven, and listing them would bury the signal.
Context: the market-wide picture
For the week starting Sep 21, 2026, 33% of open-market insider filings across the whole market were buys (227 buys against 457 sales). The long-run average sits near a third, because insiders buy for one reason and sell for many. The full weekly series since 2019 is on the insider sentiment index.
Questions this post answers
Which insiders bought stock on Sep 29, 2026?
36 open-market purchases were filed with the SEC on Sep 29, 2026, worth $93.0M across 32 companies. The largest was George Simeon at ADARx Pharmaceuticals, Inc. (ADRX), $27.2M. The ten largest are listed above.
Were insiders net buyers or net sellers on Sep 29, 2026?
By dollar value, sellers: $93.0M bought against $161.0M in sales of $1M or more. Selling normally dominates because executives sell on pre-set schedules; what matters is the buying, which is voluntary.
What counts as an insider buy here?
Only Form 4 transactions with code P — an open-market purchase paid for with the insider's own money. Grants (A), option exercises (M) and shares withheld for tax (F) are excluded, because they follow vesting schedules set years earlier and say nothing about what the insider thinks of the price.
How current is this?
The SEC publishes Form 4 filings through about 10 pm Eastern each business day. This report covers everything published on Sep 29, 2026 and was generated early the next morning from the same data the members area uses.