Archived edition · SEC Form 4

Insider buying — week of October 7, 2026

Filings as of Oct 7, 2026 · frozen, never updated · current reading

Net buyers
136

1 excluded — net not disclosed

Clusters
64
Tracked
1472

Participation was mixed. 136 of 1472 tracked companies finished the window net buyers of their own shares (9%); the rest were flat or net sellers.

TSM is the story: 30 separate insiders there filed open-market purchases in this window, which is a company-wide pattern rather than one executive acting alone. 63 other companies in this edition also drew more than one buyer.

The dollars are concentrated rather than spread: RSG alone is 50% of the net open-market buying in the 10 names below.

More separate purchases were filed at GPI than at any other name here — 104 of them.

The individual purchases listed below were filed between Oct 1, 2026 and Oct 2, 2026, across 3 companies.

Companies with more than one insider buying

TSM Taiwan Semiconductor officer/director
30 buyers $1,225,115
SPG Simon Property Group Inc officer/director
11 buyers $460,716
FUL H.B. Fuller Co. officer/director
7 buyers $27,984
CC Chemours Co officer/director
7 buyers $488,619
DKS Dick's Sporting Goods Inc officer/director
7 buyers $5,588,664
GME GameStop Corp officer/director
5 buyers $75,951,519
ELAN Elanco Animal Health Inc officer/director
5 buyers $1,473,069
KMPR Kemper Corp officer/director
5 buyers $367,880
BSX Boston Scientific Corp officer/director
4 buyers $9,486,038
APTV Aptiv PLC officer/director
4 buyers $8,254,508
TSCO Tractor Supply Company officer/director
3 buyers $652,394
HOG Harley-Davidson Inc officer/director
3 buyers $1,320,068
PFE Pfizer Inc officer/director
3 buyers $2,876,849
DY Dycom Industries Inc officer/director
3 buyers $551,307
ADC Agree Realty Corp officer/director
3 buyers $1,944,072
CBU Community Financial System, Inc. officer/director
3 buyers $75,265
COO Cooper Cos Inc officer/director
3 buyers $1,880,110
KRMN Karman Holdings Inc officer/director
3 buyers $1,036,485
CELH Celsius Holdings Inc officer/director
3 buyers $1,830,043
MATW Matthews Intl Corp officer/director
3 buyers $318,112
ACI Albertsons Companies, Inc. officer/director
3 buyers $2,515,542
REZI Resideo Technologies Inc officer/director
3 buyers $848,123
TNC Tennant Co officer/director
3 buyers $849,240
MTDR Matador Resources Co officer/director
3 buyers $1,211,793
ACDC Profrac Holding Corp officer/director
3 buyers $9,753,790
ABCL Abcellera Biologics Inc officer/director
3 buyers $1,545,680
CE Celanese Corp officer/director
3 buyers $230,062
CHCO City Holding Co officer/director
4 buyers -$647,973
PNFP Pinnacle Financial Partners officer/director
3 buyers -$17,854,073
SHEN Shenandoah Telecommunications Co officer/director
2 buyers $74,280
BABA Alibaba Group Holding Ltd officer/director
2 buyers $12,127,896
ENOV Enovis Corp officer/director
2 buyers $449,599
TPL Texas Pacific Land Corp officer/director
2 buyers $20,175
VFC VF Corp officer/director
2 buyers $787,352
MGY Magnolia Oil & Gas Corp officer/director
2 buyers $324,571
DFH Dream Finders Homes Inc officer/director
2 buyers $1,427,755
RBA RB Global Inc officer/director
2 buyers $140,942
UBER Uber Technologies Inc officer/director
2 buyers $13,305,343
AAON Aaon Inc officer/director
2 buyers $109,584
CAVA Cava Group Inc officer/director
2 buyers $482,340
PLNT Planet Fitness Inc officer/director
2 buyers $253,519
AMH American Homes 4 Rent officer/director
2 buyers $534,610
AHCO Adapthealth Corp officer/director
2 buyers $394,530
GLXY Galaxy Digital Inc officer/director
2 buyers $44,777
AMR Alpha Metallurgical Resources, Inc. officer/director
2 buyers $12,635,232
ELV Elevance Health Inc officer/director
2 buyers $1,368,280
AIIR Air Holdings Ltd officer/director
2 buyers $79,982
GO Grocery Outlet Holding Corp officer/director
2 buyers $246,518
HWKN Hawkins Inc officer/director
2 buyers $261,576
CMC Commercial Metals Co officer/director
2 buyers $604,468
MRP Millrose Properties officer/director
2 buyers $115,580
DTM DT Midstream Inc officer/director
2 buyers $218,313
MKC McCormick & Co officer/director
2 buyers -$10,729,364
KMT Kennametal Inc officer/director
2 buyers -$549,085
CORZ Core Scientific Inc officer/director
2 buyers -$1,983,925
GSHD Goosehead Insurance Inc officer/director
2 buyers -$1,575,030
CROX Crocs Inc officer/director
2 buyers -$3,542,215
SEZL Sezzle Inc officer/director
2 buyers -$5,656,425
BX Blackstone Inc officer/director
2 buyers -$570,703,101
FFIN First Financial Bankshares Inc officer/director
2 buyers -$395,847
TTMI TTM Technologies officer/director
2 buyers -$2,077,916
UMBF Umb Financial Corp officer/director
2 buyers -$5,424,588
CVBF CVB Financial Corp officer/director
2 buyers -$242,080
ABR-PD Arbor Realty Trust Inc officer/director
2 buyers —

“Buyers” counts separate insiders who filed an open-market purchase (Form 4 code P) at that company in the window. The dollar figure is net of open-market sales by insiders at the same company, so it can be negative even where several people bought. The officer/director tag means at least one buyer filed a role other than 10% owner or an unspecified “insider”; untagged means no such role was filed, not that the buyers were anything in particular.

Largest net open-market buying this edition

RSG Republic Services Inc
$1,380,322,19486 buys
LEN Lennar Corp
$595,294,96245 buys
JEF Jefferies Financial Group Inc.
$318,717,0061 buy
GPI Group 1 Automotive Inc
$187,264,818104 buys
CRBG Corebridge Financial Inc
$150,430,41120 buys
GME GameStop Corp
$75,951,51910 buys
AAT American Assets Trust Inc
$20,059,59118 buys
UBER Uber Technologies Inc
$13,305,3433 buys
AMR Alpha Metallurgical Resources, Inc.
$12,635,23226 buys
BABA Alibaba Group Holding Ltd
$12,127,8963 buys

Net value = open-market buys minus sells as disclosed on Form 4 (code P). Grants/options/withholding excluded.

Who filed, and when

GME Ryan Cohen · Director & Officer
700,000 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
448,113 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
342,553 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
842,753 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
44,300 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
20,200 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
2,290 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
2,452 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
5,135 sh Oct 2, 2026
LEN Berkshire Hathaway Inc · 10% Owner
299 sh Oct 2, 2026
MKC Gavin Hattersley · Director
1,000 sh Oct 2, 2026
GME Nat Turner · Director
10,462 sh Oct 1, 2026

Open-market purchases (Form 4 code P) only — grants, option exercises and tax withholding are excluded. Share counts are as disclosed in the filing.

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SEC Form 4 · public domain

Insider buying, week of October 7, 2026: 30 insiders at $TSM bought their own shares ($1,225,115 net), per SEC Form 4. Edition:

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Educational, not financial advice. Figures are as disclosed in public SEC EDGAR Form 4 filings.

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This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.

Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.