SEC reporting owner

GAYNER THOMAS SINNICKSON SEC insider disclosures

Explore GAYNER THOMAS SINNICKSON's reporting-owner identity, issuer relationships, purchases, sales and SEC filing receipts.

As of 2026-10-07T00:29:11.873Z

Reporting owner CIK
0001159015
Issuers
5
Coverage
verified

Issuer relationships

A reporting-owner CIK identifies the filer across issuer relationships and name aliases. A filer may be an individual or an organization; the filing role is the relevant evidence.

MARKEL GROUP INC.0001096343MKLYesYes
Graham Holdings Co0000104889WPO, GHCNoYes
Colfax CORP0001420800CFXNoYes
Cable One, Inc.0001632127CABONoYes
COCA COLA CO0000021344KONoYes

Recent SEC transactions

Code P identifies a purchase, S a sale and A an award. Awards and open-market purchases describe different events. Use the public availability date when deciding when a researcher could have known about the transaction.

2026-04-042026-04-01KOA3,825.35Not reported
2026-02-272026-02-24MKLA4,483.62Not reported
2025-04-042025-04-01KOA4,053.11Not reported
2025-02-212025-02-18MKLA3,349.83Not reported
2025-02-082025-02-07MKLP100Not reported
2024-11-062024-11-01MKLP100Not reported

Up to 50 transactions from the recent two-year owner window.

Source evidence and strategy eligibility

The transactions below come from filings; a historical tracker separately simulates following eligible events. Joint filers can report the same transaction, and an owner can have filings at multiple companies. Public availability, amendment lineage and verified coverage determine which events a historical tracker may use.

The current directory marks this owner's filing coverage verified.