Form 4 for MASS 908 Devices Inc.
Accepted 2025-06-13 00:00:00 ET · period of report 2025-06-11 · accession 0001562180-25-004806 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-06-13 | 2025-06-11 | MASS | Eisenberg Marcia | Dir | M - OptEx | — | +11.4K | 26.0K | +78% | — |
| D | 2025-06-13 | 2025-06-11 | MASS | Eisenberg Marcia | Dir | M - OptEx | $0.00 | -11.4K | 0 | -100% | $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 | 2025-06-11 | M | A | 11,364 | — | 25,957 | D | — | — | (F1) Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested. This transaction represents the settlement of RSUs in shares of Common Stock on their scheduled vesting date. |
| 2 | Derivative | Restricted Stock Units | 2025-06-11 | M | D | 11,364 | $0.00 | 0 | D | — · — to — | 11,364 Common Stock | (F1) Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested. This transaction represents the settlement of RSUs in shares of Common Stock on their scheduled vesting date. (F2) The RSUs became fully vested on June 11, 2025, the day prior to the 2025 Annual Meeting of the Stockholders of 908 Devices Inc. The RSUs have no expiration date. |