Stuart Kupinsky Insider Trades & Stock Holdings

EVP, CLO & Corp Sec · Mercury Systems Inc · Latest filing Sep 21, 2026

Stuart Kupinsky, EVP, CLO & Corp Sec at Mercury Systems Inc has 1 Form 4 trade on file since Sep 21, 2026. Open-market activity: 0 purchases ($0) and 1 sale ($86.52K), net -$86.52K. Latest filing: disposed of 1K shares of $MRCY on Sep 21, 2026 at $86.52.

Trades on file

1

Open-market bought

$0

Open-market sold

$86.52K

Net open-market

-$86.52K

Latest filing

Sep 21, 2026

All insider trades by Stuart Kupinsky

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Sep 21, 2026	$MRCY	Sell (Open-market sale) 10b5-1	1K	$86.52	$86.52K						EVP, CLO & Corp Sec		—

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Stuart Kupinsky traded

• $MRCY

Frequently asked questions

Has Stuart Kupinsky been buying or selling stock?

Stuart Kupinsky has 0 open-market purchases and 1 open-market sale on file, net -$86.52K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Stuart Kupinsky's latest insider trade?

disposed of 1K shares of $MRCY on Sep 21, 2026 at $86.52.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.