Key facts
- This page summarizes Robert Lawrence Seelig's Form 4 filing for WHITE MOUNTAINS INSURANCE GROUP LTD (WTM).
- 1 reported transaction and 0 derivative rows are listed below.
- Accepted by SEC: 20 Mar 2026, 14:51.
Robert Lawrence Seelig - 19 Mar 2026 Form 4 Insider Report for WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)
- Reporting relationship
- EVP & General Counsel
- Issuer ticker
- WTM
- Reported as of
- 19 Mar 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 20 Mar 2026, 14:51:41 UTC
- Prior SEC filing
- 27 Feb 2026
- Source filing
- View source filing
- Reporting owner signature
- Wesley C. Bell, by Power of Attorney
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Robert Lawrence Seelig filed Form 4 for WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) on 20 Mar 2026.
Change
- Previous filing in this sequence was filed on 27 Feb 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001188198
Primary reporting owner
SEELIG ROBERT LAWRENCE
- Relationship
- EVP & General Counsel
- Address
- C/O WHITE MOUNTAINS INSURANCE GROUP, LTD, 23 SOUTH MAIN STREET, SUITE 3B, HANOVER
- Signature
- Wesley C. Bell, by Power of Attorney
- Signature date
- 20 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
WTM
transaction
Common Shares
Gift
- Transaction value
- Shares
- -50
- Change %
- -0.28%
- Price
- $0.000000*
- Shares after
- 17,857
- Date
- 19 Mar 2026
- Ownership
- Direct
WTM
holding
Common Shares (restricted)
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,500
- Date
- 19 Mar 2026
- Ownership
- Direct
WTM
holding
Common Shares
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 4
- Date
- 19 Mar 2026
- Ownership
- by wife and dependent children
WTM
holding
Common Shares
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 583
- Date
- 19 Mar 2026
- Ownership
- By WTM Retirement Plan
* marks a reported price that did not pass the local price check.