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PETER J GUNDERMANN

CIK 1182854 · PRESIDENT/CEO · last filed 2026-06-17

PETER J GUNDERMANN is a PRESIDENT/CEO who has filed 116 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for ATRO, was dated Jun 17, 2026. Across all open-market trades the lifetime net is −$3.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $12.2M 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

$12.17M

Companies

2

Total Filings

116

Lifetime Open-Market Net

-$3.64M

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
ATRO PRESIDENT/CEO 105,701 $68.33 $7.22M -$3.52M 91 2026-06-17
MOG.B Director 11,545 $428.13 $4.94M -$121.5K 25 2025-11-13

Recent Filings

116 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
2026-06-17 ATRO Other (J) +168,375 $0 EDGAR
2026-03-05 ATRO Mixed +10,061 $818.5K EDGAR
2026-02-23 ATRO Grant (A) — $0 EDGAR
2025-12-08 ATRO Grant (A) — $0 EDGAR
2025-11-25 ATRO Mixed +6,411 -$75.5K EDGAR
2025-11-24 ATRO Mixed +6,411 -$75.5K EDGAR
2025-11-13 MOG.B Grant (A) +575 $0 EDGAR
2025-10-30 MOG.B Mixed +1,710 -$181 EDGAR
2025-04-03 ATRO Mixed +6,930 -$103.0K EDGAR
2025-03-20 ATRO Mixed +15,196 $103.0K EDGAR
Showing 1–10 of 116
Page 1 of 12
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.