Brown Christopher D. Insider Trades & Stock Holdings

Director · 908 Devices Inc. · Latest filing Oct 7, 2026

Brown Christopher D., Director at 908 Devices Inc. has 1 Form 4 trade on file since Oct 7, 2026. Open-market activity: 0 purchases ($0) and 1 sale ($356.70K), net -$356.70K. Latest filing: disposed of 30K shares of $MASS on Oct 7, 2026 at $11.89.

Trades on file

1

Open-market bought

$0

Open-market sold

$356.70K

Net open-market

-$356.70K

Latest filing

Oct 7, 2026

All insider trades by Brown Christopher D.

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 7, 2026	$MASS	Sell (Open-market sale) 10b5-1	30K	$11.89	$356.70K			+0.4%			Director		—

"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 Brown Christopher D. traded

• $MASS

Frequently asked questions

Has Brown Christopher D. been buying or selling stock?

Brown Christopher D. has 0 open-market purchases and 1 open-market sale on file, net -$356.70K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Brown Christopher D.'s latest insider trade?

disposed of 30K shares of $MASS on Oct 7, 2026 at $11.89.

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.