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STUART KUPINSKY

CIK 1289593 · EVP, CLO & Corp Sec · last filed 2026-02-19

STUART KUPINSKY is an EVP, CLO & Corp Sec who has filed 25 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing shows the insider sold $191.1K of MRCY on Feb 19, 2026. Across all open-market trades the lifetime net is −$769.0K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.9M 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

$6.87M

Companies

2

Total Filings

25

Lifetime Open-Market Net

-$769.0K

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
MRCY EVP, CLO & Corp Sec 69,092 $99.38 $6.87M -$453.2K 7 2026-02-19
TEKELEC (TKLC) Delisted Senior V.P. (See Remarks) 0 — — -$315.8K 14 2012-01-30

Recent Filings

25 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
2026-02-19 MRCY Sell (S) −2,287 -$191.1K EDGAR
2026-02-17 MRCY Notice (144) −2,287 -$191.1K EDGAR
2025-08-20 MRCY Sell (S) −2,402 -$157.3K EDGAR
2025-08-19 MRCY Notice (144) −1,220 -$78.6K EDGAR
2025-08-19 MRCY Grant (A) +9,865 $0 EDGAR
2025-08-18 MRCY Notice (144) −1,182 -$78.6K EDGAR
2025-02-19 MRCY Sell (S) −2,377 -$104.9K EDGAR
2025-02-18 MRCY Notice (144) −2,377 -$104.9K EDGAR
2024-09-18 MRCY Grant (A) +15,657 $0 EDGAR
2024-08-19 MRCY Grant (A) +15,657 $0 EDGAR
Showing 1–10 of 25
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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.