Form 4 for MASS 908 Devices Inc.
Accepted 2026-05-29 16:15:19 ET · period of report 2026-05-28 · accession 0001836988-26-000009 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| T | 2026-05-29 16:15 | 2026-05-28 | MASS | Brown Christopher D. | Dir | S - Sale | $9.00 | -30.0K | 895.6K | -3% | -$270.0K |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-05-28 | S | D | 30,000 | $9.00 | 895,559 | D | — | — | (F1) This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2025. |