Kenneweg John sold MASS

September 16, 2026 · Form 4 insider transaction

Kenneweg John sold 21,399 shares of 908 Devices Inc. at $10.11 per share, a transaction worth $216.3K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 1 day after the transaction.

Direction
Disposed (sell-side)
Shares
21,399
Price
$10.11
Total value
$216.3K
RoleOfficer
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateSeptember 16, 2026
Filing dateSeptember 17, 2026
Shares owned after57,784
OwnershipDirect
10b5-1 planYes
AmendedNo

Footnotes

This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.; The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.00 to $10.32 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.

View the original Form 4 on SEC EDGAR