Insider transactions

W Nicholas Howley

CIK 1352573 · Exec. Chairman of the Board · last filed 2026-09-21

"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
$41.39M
Companies
3
Total Filings
302
Lifetime Open-Market Net
-$1.37B

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

TDG price and trades

Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.

Shares held

Shares owned after each reported transaction on this company (direct holdings as reported).

Open-market buying and selling

by month

Dollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.

Exposure by company

latest
OfficerDirector10% owner* stale (no filing in 3 yrs)

Most recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.

Filer Profile

Reported Address
C/O TRANSDIGM GROUP INC.
1350 EUCLID AVE, SUITE 1600
CLEVELAND, OH 44115
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
TDG Director 21,786 $1134.44 $24.72M -$1.36B 260 2026-09-21
PRM Director 606,200 $27.51 $16.68M $0 12 2026-04-24
Polypore International, Inc. (PPO) Delisted Director 5,186 — — -$3.53M 16 2012-08-14

Recent Filings · Page 3 of 31

302 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
2025-11-06 TDG Grant (A) — $0 EDGAR
2025-10-15 TDG Mixed — -$3.41M EDGAR
2025-09-16 TDG Mixed — -$3.37M EDGAR
2025-08-18 TDG Mixed — -$3.44M EDGAR
2025-08-15 TDG Notice (144) −8,208 -$11.47M EDGAR
2025-07-15 TDG Mixed — -$3.91M EDGAR
2025-06-24 PRM Other (J) +746,767 $0 EDGAR
2025-06-18 TDG Mixed — -$3.57M EDGAR
2025-05-16 TDG Mixed — -$3.43M EDGAR
2025-05-05 TDG Notice (144) −57,449 -$84.79M EDGAR
Showing 21–30 of 302
Page 3 of 31
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.