Form 4/A for MASS 908 Devices Inc.
Accepted 2026-03-05 00:00:00 ET · period of report 2026-03-02 · accession 0002115341-26-000008 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DA | 2026-03-05 | 2026-03-02 | MASS | McCallion Kevin J. | SVP, Products, Production | M - OptEx | $1.05 | +7 | 44.9K | +0.0% | +$7.35 |
| DA | 2026-03-05 | 2026-03-02 | MASS | McCallion Kevin J. | SVP, Products, Production | S - Sale+OE | $7.00 | -7 | 44.9K | -0.0% | -$49 |
| DA | 2026-03-05 | 2026-03-02 | MASS | McCallion Kevin J. | SVP, Products, Production | M - OptEx | $0.00 | -7 | 26.7K | -0.0% | $0 |
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 | 2026-03-02 | M | A | 7 | $1.05 | 44,932 | D | — | — | |
| 2 | Common | Common Stock | 2026-03-02 | S | D | 7 | $7.00 | 44,925 | D | — | — | |
| 3 | Derivative | Stock Option (right to buy) | 2026-03-02 | M | D | 7 | $0.00 | 26,686 | D | $1.05 · — to 2030-08-27 | 7 Common Stock | (F2) The shares underlying the option are fully vested and immediately exercisable. |