Margaret Dillon
Director · WHITE MOUNTAINS INSURANCE GROUP LTD
Individual
- 2024
- May 22, 2026
- 3
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Margaret Dillon files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Michael George Rosenbaum - $21.23M in GWRE purchases and sales in the last 12 months
- John P. Mullen - $14.66M in GWRE purchases and sales in the last 12 months
- George Manning Rountree - $10.25M in WTM purchases and sales in the last 12 months
- Jeffrey Elliott Cooper - $6.34M in GWRE purchases and sales in the last 12 months
- James Winston King - $4.33M in GWRE purchases and sales in the last 12 months
- David Franklin Peterson - $849K in GWRE purchases and sales in the last 12 months
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Frequently asked questions
Who is Margaret Dillon?
Margaret Dillon is a corporate insider, tracked as Director of WHITE MOUNTAINS INSURANCE GROUP LTD (WTM). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Margaret Dillon last file a Form 4?
The most recent primary Form 4 on record is dated 22 May 2026, one of 3 filings going back to 2024.
