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JOAN M LAMMTENNANT

CIK 1208239 · last filed 2026-07-07

JOAN M LAMMTENNANT is a corporate insider who has filed 78 SEC Form 4 insider transactions across 7 companies since 2007. The most recent filing, for OSG, was dated Jul 7, 2026. Across all open-market trades the lifetime net is −$741.1K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $11.8M 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

$11.76M

Companies

7

Total Filings

78

Lifetime Open-Market Net

-$741.1K

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
OSG Director — $5.80 — $0 3 2026-07-07
AB Director 24,875 $37.35 $929.1K $0 5 2026-05-22
EQH Director 54,788 $49.39 $2.71M $0 8 2026-05-21
OCTAVE SPECIALTY GROUP INC (AMBC) Delisted Director 106,990 $8.85 $946.9K $0 11 2025-10-02
OCTAVE SPECIALTY GROUP INC (AMBC.WS) Delisted Director — $0.01 — $0 10 2023-04-04
OCTAVE SPECIALTY GROUP INC (AMBCW) Delisted Director — — — $0 3 2019-05-01
SIGI Director 86,118 $94.40 $8.13M -$741.1K 38 2014-12-09

Recent Filings

78 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
2026-07-07 OSG Grant (A) — $0 EDGAR
2026-05-22 AB Grant (A) +4,397 $170.0K EDGAR
2026-05-21 EQH Grant (A) +6,897 $290.0K EDGAR
2026-04-02 OSG Grant (A) — $0 EDGAR
2026-01-05 OSG Grant (A) — $0 EDGAR
2025-10-02 OCTAVE SPECIALTY GROUP INC (AMBC) Delisted Grant (A) — $0 EDGAR
2025-09-30 OCTAVE SPECIALTY GROUP INC (AMBC) Delisted Conv (C) +106,990 $0 EDGAR
2025-07-01 OCTAVE SPECIALTY GROUP INC (AMBC) Delisted Grant (A) — $0 EDGAR
2025-05-23 EQH Grant (A) +5,428 $0 EDGAR
2025-05-23 AB Grant (A) +4,253 $170.0K EDGAR
Showing 1–10 of 78
Page 1 of 8
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.