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John Langton Jr. Sennott

CIK 1362376 · SVP, Chief Financial Officer · last filed 2026-06-16

John Langton Jr. Sennott is a SVP, Chief Financial Officer who has filed 50 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for ASIC, was dated Jun 16, 2026. Across all open-market trades the lifetime net is +$1.1M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $744.9K across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$744.9K

Companies

4

Total Filings

50

Lifetime Open-Market Net

$1.10M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
ASIC Director 30,380 $24.52 $744.9K $499.8K 2 2026-06-16
ALLEGHANY CORP /DE (Y) Delisted SVP, Chief Financial Officer 5,549 $847.79 $4.70M $508.5K 34 2019-07-01
Allied World Assurance Co Holdings, AG (AWH) Delisted EVP, Chief Corp. Strat Officer 4,798 $0.08 $393 $48.2K 8 2012-02-28
Darwin Professional Underwriters Inc (DR) Delisted S.V.P. - CFO 0 — — $43.0K 3 2008-10-21

Recent Filings

50 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-06-16 ASIC Exer (M) +980 $0 EDGAR
2025-06-16 ASIC Mixed +29,400 $499.8K EDGAR
2019-07-01 ALLEGHANY CORP /DE (Y) Delisted Grant (A) — $0 EDGAR
2019-04-02 ALLEGHANY CORP /DE (Y) Delisted Grant (A) — $0 EDGAR
2019-02-04 ALLEGHANY CORP /DE (Y) Delisted Mixed +465 -$154.5K EDGAR
2019-01-03 ALLEGHANY CORP /DE (Y) Delisted Grant (A) — $0 EDGAR
2018-10-02 ALLEGHANY CORP /DE (Y) Delisted Grant (A) — $0 EDGAR
2018-07-02 ALLEGHANY CORP /DE (Y) Delisted Grant (A) — $0 EDGAR
2018-04-03 ALLEGHANY CORP /DE (Y) Delisted Grant (A) — $0 EDGAR
2018-02-28 ALLEGHANY CORP /DE (Y) Delisted Mixed +954 $579.0K EDGAR
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.