Weekly Insider Digest

Week of Sep 14 – Sep 18, 2026

By · Insider-trading data from SEC EDGAR
Published:

The summary paragraph is drafted by an AI model from the week's ranked filings and published automatically; every figure in the tables comes directly from SEC Form 4 filings. How this page is built. Not investment advice.

Insider activity this week was dominated by two massive energy and technology sales: SGF FANG Holdings and Lyndal Greth liquidated 9.08 million Diamondback Energy (FANG) shares for $1.86 billion, while Platinum Equity sold 13.125 million Ingram Micro (INGM) shares for $356.8 million. The largest purchase came from Cascade Investment and William H. Gates III, who bought 580,810 Republic Services (RSG) shares for $129.3 million, followed by Director Matthew Wilks's $34.3 million buy of 1.32 million Flotek Industries (FTK) shares. The week's standout pattern is concentrated selling pressure in energy (FANG) and technology distribution (INGM), contrasted with selective industrial and specialty-chemical buying (RSG, FTK), suggesting insiders are rotating out of high-valuation positions while accumulating in waste management and niche industrial plays.

Total bought
$227.0M
10 filings
Total sold
$5.4B
10 filings
Companies
14
tracked this week
Net flow
−$5.2B
net selling

Top insider buys

#CompanyInsiderSharesValue
1RSGREPUBLIC SERVICES, INC.CASCADE INVESTMENT, L.L.C.Other580.8K$129.3M
2FTKFLOTEK INDUSTRIES INC/CN/Matthew WilksDirector1.3M$34.3M
3PMTSCPI Card Group Inc.Tricor PMT25 Holdings Inc.Other525.0K$11.3M
4CRBD◇5Corebridge Financial, Inc.NIPPON LIFE INSURANCE COOther320.8K$11.2M
5CRBD◇5Corebridge Financial, Inc.NIPPON LIFE INSURANCE COOther296.0K$10.3M
6CRBD◇5Corebridge Financial, Inc.NIPPON LIFE INSURANCE COOther210.9K$7.4M
7ARDCAres Dynamic Credit Allocation Fund, Inc.THRIVENT FINANCIAL FOR LUTHERANSOther240.0K$6.0M
8CRBD◇5Corebridge Financial, Inc.NIPPON LIFE INSURANCE COOther176.3K$6.0M
9CRBD◇5Corebridge Financial, Inc.NIPPON LIFE INSURANCE COOther171.1K$5.9M
10KBDCKayne Anderson BDC, Inc.James L RoboDirector400.0K$5.2M

Top insider sells

#CompanyInsiderSharesValue
1FANG◇2Diamondback Energy, Inc.SGF FANG Holdings, LPOther9.1M$1.9B
2FANG◇2Diamondback Energy, Inc.SGF FANG Holdings, LPOther9.1M$1.9B
3IHTINNSUITES HOSPITALITY TRUSTMarc E BergOther16.0K$361.5M
4INGMIngram Micro Holding CorpPlatinum Equity, LLCOther13.1M$356.8M
5UMCUNITED MICROELECTRONICS CORPChitung LiuCFO1.6M$228.8M
6LFSTLifeStance Health Group, Inc.TPG GP A, LLCOther18.4M$226.3M
7AURAurora Innovation, Inc.Uber Technologies, IncOther29.4M$182.2M
8CHYM◇2Chime Financial, Inc.DST Global Advisors LtdOther3.2M$109.3M
9CHYM◇2Chime Financial, Inc.DST Global Advisors LtdOther3.2M$109.3M
10STXSeagate Technology Holdings plcWilliam D MosleyCEO97.9K$75.6M

Quick Answer

What were the biggest insider trades the week of Sep 14 – Sep 18, 2026?

For the week of Sep 14 – Sep 18, 2026, the biggest buy was $129.3M of RSG by CASCADE INVESTMENT, L.L.C.; the biggest sale was $1.9B of FANG by SGF FANG Holdings, LP.

Source: SEC EDGAR Form 4

Frequently Asked Questions

Which insider bought the most the week of Sep 14 – Sep 18, 2026?

CASCADE INVESTMENT, L.L.C. (Other) bought $129.3M of REPUBLIC SERVICES, INC. (RSG) — the largest insider purchase of the week by dollar value.

Which insider sold the most the week of Sep 14 – Sep 18, 2026?

SGF FANG Holdings, LP (Other) sold $1.9B of Diamondback Energy, Inc. (FANG) — the largest insider sale of the week by dollar value.

How are these insider trades ranked?

Trabud ranks each week's SEC Form 4 filings by total transaction dollar value, surfacing the largest open-market insider buys and sells. All data comes directly from official SEC EDGAR filings.

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