Insider trading this week, Sep 12, 2026 – Sep 18, 2026: 307 buys, $547.6M
Across the filing days from Saturday, September 12, 2026 to Friday, September 18, 2026, insiders filed 307 open-market purchases worth $547.6M in 188 companies, and 238 sales of $1M or more worth $6.85B. The company with the most distinct buyers was SBLK with 8; 29 cluster windows closed during the week.
Largest purchases of the week
| Filed | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-09-17 | Kolchinsky Peterdiplargest ever Director · 10% owner | TYRA Tyra Biosciences, Inc. | Bought | 9,078,529 | $22.03 | $200.0M |
| 2026-09-14 | Investment L.L.C. Cascade 10% owner | RSG REPUBLIC SERVICES, INC. | Bought | 580,810 | $222.63 | $129.3M |
| 2026-09-15 | Wilks Matthewdiplargest ever Director | FTK FLOTEK INDUSTRIES INC/CN/ | Bought | 1,319,493 | $26.01 | $34.3M |
| 2026-09-15 | GL Part SPV II, LLCfirst buy Insider | SAFX XCF Global, Inc. | Bought | 6,891,798 | $2.50 | $17.2M |
| 2026-09-16 | Hrt Financial Lplargest ever 10% owner | USO United States Oil Fund, LP | Bought | 105,195 | $157.88 | $16.6M |
| 2026-09-14 | Tricor PMT25 Holdings Inc.clusterfirst buydip 10% owner | PMTS CPI Card Group Inc. | Bought | 525,000 | $21.50 | $11.3M |
| 2026-09-18 | Life Insurance Co Nipponlargest ever 10% owner | CRBG Corebridge Financial, Inc. | Bought | 320,785 | $35.02 | $11.2M |
| 2026-09-16 | Life Insurance Co Nipponlargest ever 10% owner | CRBG Corebridge Financial, Inc. | Bought | 295,967 | $34.86 | $10.3M |
| 2026-09-16 | Lachlan K MurdochCEOchairfirst buy Executive Chair, CEO | FOX Fox Corp | Bought | 149,934 | $68.53 | $10.3M |
| 2026-09-16 | Batista de Lima Filho Pedrolargest ever Director | AXIA3 AXIA Energia S.A. | Bought | 856,400 | $10.52 | $9.0M |
Most buyers in one company
| Ticker | Company | Distinct buyers | Bought |
|---|---|---|---|
| SBLK | Star Bulk Carriers Corp. | 8 | $6.9M |
| PMTS | CPI Card Group Inc. | 5 | $12.0M |
| RVSB | RIVERVIEW BANCORP INC | 5 | $51k |
| XBP | XBP Global Holdings, Inc. | 4 | $2.4M |
| RWT | REDWOOD TRUST INC | 4 | $1.3M |
| EML | EASTERN CO | 4 | $118k |
| CBKM | CONSUMERS BANCORP INC /OH/ | 4 | $26k |
| BWMX | BETTERWARE DE MEXICO, S.A.P.I. DE C.V | 3 | $2.3M |
Cluster windows that closed this week
AVBC — 5 buyers, $587k, score 84; TENX — 4 buyers, $4.9M, score 81; RGCO — 5 buyers, $107k, score 78; RVSB — 9 buyers, $84k, score 77; GPUS — 4 buyers, $1.2M, score 76; CBKM — 6 buyers, $35k, score 75; INBX — 3 buyers, $4.0M, score 70; LILA — 3 buyers, $15.5M, score 70.
Most active buyers
Horizon Kinetics Asset Management Llc (10 filings); Life Insurance Co Nippon (5 filings); Equels Thomas K (4 filings); Hrt Financial Lp (3 filings); Sousa Mauad Bruno (3 filings); Saba Capital Management, L.P. (3 filings).
Largest sales
| Filed | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-09-17 | Greth Lyndal 10% owner | FANG Diamondback Energy, Inc. | Sold | 9,079,675 | $205.26 | $1.86B |
| 2026-09-17 | Greth Lyndal 10% owner | FANG Diamondback Energy, Inc. | Sold | 9,079,675 | $205.26 | $1.86B |
| 2026-09-14 | Gores Tom 10% owner | INGM Ingram Micro Holding Corp | Sold | 13,125,000 | $27.19 | $356.8M |
| 2026-09-17 | Liu Chitung CFO & SVP | UMC UNITED MICROELECTRONICS CORP | Sold | 1,600,000 | $143.00 | $228.8M |
| 2026-09-15 | James G Coulter 10% owner | LFST LifeStance Health Group, Inc. | Sold | 18,409,705 | $12.29 | $226.3M |
Every filing of the week, on the chart
The members Filings Browser has all of it — every buy and every $1M+ sale of the last two years, on the price, with the SEC document one click away.
Open the browserFree sampleQuestions this post answers
What did insiders buy the week of Sep 12, 2026?
307 open-market purchases worth $547.6M. The largest: Kolchinsky Peter at TYRA ($200.0M), Investment L.L.C. Cascade at RSG ($129.3M), Wilks Matthew at FTK ($34.3M).
Which stock had the most insider buyers this week?
SBLK, with 8 distinct insiders buying $6.9M in total. Next: PMTS (5), RVSB (5), XBP (4).
Were insiders net buyers this week?
$547.6M bought against $6.85B sold in $1M+ filings — net selling by dollar value. Selling normally dominates; the information is in the buying.