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908 Devices Inc. planned insider sales

In the last twelve months insiders at 908 Devices Inc. filed 12 Form 144 notices of planned sales, 606,310 shares worth $5.3 million at the time of filing, from 7 sellers. The latest, filed 6 October 2026: Joseph Griffith (officer), 5,000 shares worth $64,000, planned for around 6 October 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
6 October 2026Joseph GriffithOfficer5,000$64,0006 October 20265,000 shares from 6 October 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
15 September 2026John KennewegOfficer27,656$269,09315 September 202627,656 shares from 15 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
25 August 2026Joseph GriffithOfficer11,459$125,13225 August 202611,459 shares from 25 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
17 August 2026Kevin KnoppOfficer20,000$205,00017 August 202620,000 shares from 17 August 2026Merrill LynchFounder SharesForm 144
11 August 2026Kevin KnoppOfficer140,000$1.3 million11 August 2026156,635 shares from 10 August 2026Merrill LynchFounder SharesForm 144
10 August 2026Christopher BrownDirector100,000$888,00010 August 202677,800 shares from 10 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesFounders SharesForm 144
23 June 2026Kevin KnoppOfficer80,000$724,00023 June 202663,365 shares from 23 June 2026Merrill LynchFounder SharesForm 144
3 June 2026Christopher BrownOfficer70,000$619,5003 June 202672,200 shares from 3 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesFounders SharesForm 144
28 May 2026Joseph GriffithOfficer6,940$56,63028 May 20266,940 shares from 28 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
8 May 2026John Wesley KennewegOfficer, Director18,255$148,0858 May 202618,255 shares from 8 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesPerformance Stock UnitsForm 144
8 April 2026Kevin McCallionOfficer27,000$182,5208 April 202626,693 shares from 8 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
8 April 2026Christopher BrownDirector100,000$676,0008 April 202690,000 shares from 8 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesFounders SharesForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Sold, per Form 4: the same seller's open-market sales on Form 4 from the notice's date to 90 days after, added up, as they appear on the insiders page; a holder who files no Form 4, such as some large holders, never shows one. What is a Form 144?