Insider · CIK 0001836585
Mark Spoto
director
Files at MASS (908 Devices Inc.). First filing May 15, 2025, latest May 15, 2025.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
1 / 0
$43k bought, $0 sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MASS: 908 Devices Inc.
MASSOct 9, 2026 · close 12.05
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 36Weak | 908 Devices Inc. | $43k 10,000 shares | +19% | +130% from low-25% from high |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 11, 2025 | MASS 908 Devices Inc. | MOption exercise Common Stock | +11,364 | - | - | 74,335 | Jun 13, 2025 |
| Jun 11, 2025 | MASS 908 Devices Inc. | MOption exercise Restricted Stock Unitsderivative | -11,364 | $0.00 | $0 | 0 | Jun 13, 2025 |
| Jun 12, 2025 | MASS 908 Devices Inc. | AGrant or award Restricted Stock Unitsderivative | +14,083 | $0.00 | $0 | 14,083 | Jun 13, 2025 |
| Jun 12, 2025 | MASS 908 Devices Inc. | AGrant or award Stock Option (option to buy)derivative | +6,516 | $0.00 | $0 | 6,516 | Jun 13, 2025 |
| May 14, 2025 | MASS 908 Devices Inc. | POpen-market purchase Common Stock | +7,000 | $4.30 | $30k | 59,971 | May 15, 2025 |
| May 14, 2025 | MASS 908 Devices Inc. | POpen-market purchase Common Stock | +3,000 | $4.25 | $13k | 62,971 | May 15, 2025 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.