Joseph H. Griffith IV, Chief Financial Officer at 908 Devices Inc. (MASS), sold 99,796 shares at $39.07 ($3.8M) on 2021-09-08, disclosed to the SEC on 2021-09-10.
Open-market sale of $3.8M MASS by Chief Financial Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Something here stands out, but not much.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $36.66 | 10,803 | $396K | 10.6% |
| 2 | $36.66 | 10,803 | $396K | 10.6% |
| 3 | $37.30 | 23,940 | $893K | 23.8% |
| 4 | $37.30 | 23,940 | $893K | 23.8% |
| 5 | $38.42 | 6,742 | $259K | 6.9% |
| 6 | $38.42 | 6,742 |
| $259K |
| 6.9% |
| 7 | $39.07 | 8,413 | $329K | 8.8% |
| 8 | $39.07 | 8,413 | $329K | 8.8% |
| Total | $37.61 avg | 99,796 | $3.8M | 100% |
| Filing → |
| MASS | SELL | 2026-02-03 | $143K | — | Filing → |
| MASS | SELL | 2025-10-06 | $45K | — | Filing → |
| MASS | SELL | 2025-09-23 | $35K | — | Filing → |