Reid Tarlton Campbell

Insider activity · 24 months0 buys2 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 2 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Company

▲ Purchases (0 ops.)

—

▼ Sales (29 ops.)

€12.1M

Latest filing published 22 May 2026 for White Mountains Insurance Group Ltd.

Filing timeline

BuySale

Reid Tarlton Campbell

Insider track record

Disclosed buys

Disclosed sells

Not enough buy signals with a settled T+90 horizon to measure a track record yet.

Signal history

Reid Tarlton Campbell: trading record in brief

Reid Tarlton Campbell is a declared insider of White Mountains Insurance Group Ltd, with filings sourced from SEC (Form 4). In total, 71 filings cover trades dated from 27 December 2007 to 21 May 2026.

Every open-market trade on record is a sale: 29 sales worth €12.1M. The totals exclude 1 filing filed without an amount. Other entries cover 30 share grants and 3 option exercises.

The newest entry dates from 22 May 2026: a share grant, in White Mountains Insurance Group Ltd. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. US insiders must file a Form 4 within two business days of a trade. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.