Christopher D. Brown Sells $170K of 908 Devices Inc (MASS) — SEC Form 4, Aug 07, 2026

Open-Market Net Sale · SEC Form 4

−$169,800

10b5-1 Plan

Equity position changed by -2.4%

Reporting Owner

Christopher D. Brown

Director

TXN 2026-08-05 · FILED 2026-08-07

Equity Position 823K sh 843,359 → 823,359

Equity Change -2.4% shares held after vs before

Filing Lag 2 business days within 2-day SEC deadline

Form 4 · Statement of Changes in Beneficial Ownership

908 Devices Inc

MASS CIK 0001555279

Reporting Owner

Name	Relationship
Christopher D. Brown CIK 0001836988	Director

Christopher D. Brown at 908 Devices Inc Full insider history

Bought (12 mo) —

Sold (12 mo) $2,164,824

More from this insider at 908 Devices Inc

Non-Derivative Securities Transactions

Title	Date	Type	Shares	Price	Net Total	Post-Txn	Ownership
Common StockF1 F2	2026-08-05	S - Sale 10b5-1	20,000 D	$8.49	-$169,800	823,359	Direct

Footnotes (2)

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2025. Show more
F2: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.35 to $8.595 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Show more

Institutional Holders

Largest by reported value

5%+ Holders · 13D/G 5 filers

Latest Schedule 13D/G per filer; stakes the filer reported closed are left out.

Other insiders at 908 Devices Inc

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