LYTIR

Insider · SEC Form 4 · Director

Brown Christopher D.

In the 12 months to Nov 8, 2026, on the open market: sold $1.6M of MASS. Filed a median of 2 business days after the trade.

Open-market purchases and sales this filer reported on SEC Form 4, by the day traded. Insiders have two business days to file. A sale marked 10b5-1 was made under a plan adopted in advance. How to read these

Insider purchases and sales, by month (last 12 months)Insider purchases: $0 in total; Insider sales: $1.6M in total.Jun: Insider sales $266KJul: Insider sales $20KAug: Insider sales $332KSep: Insider sales $317KOct: Insider sales $357KNov: Insider sales $328KDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $1.6M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.
  1. MASSSold: 908 Devices Inc. Nov 4, 2026 30,000 shares filed Nov 6, 2026 775,559 shares held directly after, as filed 10b5-1 plan filing $328K
  2. MASSSold: 908 Devices Inc. Oct 7, 2026 30,000 shares filed Oct 9, 2026 745,559 shares held directly after, as filed 10b5-1 plan filing $357K
  3. MASSSold: 908 Devices Inc. Sep 2, 2026 30,000 shares filed Sep 4, 2026 775,559 shares held directly after, as filed 10b5-1 plan filing $317K
  4. MASSSold: 908 Devices Inc. Aug 11, 2026 8,358 shares filed Aug 12, 2026 805,559 shares held directly after, as filed 10b5-1 plan filing $77K
  5. MASSSold: 908 Devices Inc. Aug 10, 2026 9,442 shares filed Aug 12, 2026 813,917 shares held directly after, as filed 10b5-1 plan filing $85K
  6. MASSSold: 908 Devices Inc. Aug 5, 2026 20,000 shares filed Aug 7, 2026 823,359 shares held directly after, as filed 10b5-1 plan filing $170K
  7. MASSSold: 908 Devices Inc. Jul 2, 2026 2,200 shares filed Jul 7, 2026 843,359 shares held directly after, as filed 10b5-1 plan filing $20K
  8. MASSSold: 908 Devices Inc. Jun 30, 2026 20,000 shares filed Jul 2, 2026 845,559 shares held directly after, as filed 10b5-1 plan filing $177K
  9. MASSSold: 908 Devices Inc. Jun 23, 2026 9,900 shares filed Jun 25, 2026 865,559 shares held directly after, as filed 10b5-1 plan filing $89K

Source: SEC Form 4 filings. Value is shares × the price reported on the filing; a filing whose price failed Lytir's check against the market price is left out, and a trade that related owners reported on separate forms is counted once. Filings can be late, amended or wrong at the source; see methodology.

Other Form 4 entries

Not counted above: entries this filer reported on Form 4 in the same 12 months that are not open-market purchases or sales. Each entry is one line of a filing.

  • MASS: option exercise or conversion (code M), 1 entry, Oct 7, 2026
Code M
An exercise or conversion of a derivative security received from the company, such as stock options.

Source: the same SEC Form 4 filings. The codes are the SEC's own transaction codes; the meanings above are a plain-words reading of the SEC's Form 4 instructions.