InsiderTrades

Griffith Joseph H. IV

SEC CIK 1431531 · EDGAR

Buying vs selling by month open-market trades, last 60 months, MASS
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
MASS908 Devices Inc.CFO 121.5K — $3.76M 302021-09-082026-08-25

Most active insiders at MASS, 12 months

#InsiderTitleBoughtSold
1 AWM Investment Company, Inc.10% —$3.68M
2 Knopp Kevin J.Pres, CEO, Dir —$2.55M
3 Brown Christopher D.Dir —$1.81M
4 Kenneweg JohnSVP, Sales, Product Marketing —$481.3K
5 Griffith Joseph H. IVCFO —$376.6K
6 McCallion Kevin J.SVP, Products, Production —$188.1K
7 Vann Brandi CDir ——
8 Leonhart Michele M.Dir ——
9 Spoto MarkDir ——
10 Hunt AnthonyDir ——

Transactions 30

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
T 2026-08-27 16:55 2026-08-25 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale $10.95 -11.5K 121.5K -9% -$125.5K
T 2026-05-29 16:15 2026-05-28 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale $9.03 -6,940 133.0K -5% -$62.7K
D 2026-02-03 2026-02-02 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $6.18 -23.2K 139.9K -14% -$143.2K
DM 2026-02-03 2026-02-01 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx — +70.1K 163.1K +75% —
M 2025-10-06 2025-10-02+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale $9.05 -5,000 97.2K -5% -$45.2K
2025-09-23 2025-09-19 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale $7.07 -5,000 97.9K -5% -$35.4K
2025-06-06 2025-06-04 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale $7.08 -6,940 102.9K -6% -$49.1K
DM 2025-02-04 2025-02-01 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx — +26.7K 120.1K +29% —
DM 2025-02-04 2025-02-03 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $2.34 -10.2K 109.9K -9% -$24.0K
D 2024-03-27 2024-03-26 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx $1.58 +8,437 93.4K +10% +$13.3K
DM 2024-02-02 2024-02-01 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx — +15.4K 95.4K +19% —
DM 2024-02-02 2024-02-01+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $7.06 -15.4K 93.5K -14% -$108.7K
2024-01-02 2023-12-28 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale $12.08 -6,000 80.0K -7% -$72.5K
2023-12-21 2023-12-19 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale $9.08 -5,580 86.0K -6% -$50.7K
D 2023-03-23 2023-03-22 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx $1.58 +5,000 96.6K +5% +$7,900
D 2023-02-03 2023-02-01 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx — +5,102 96.7K +6% —
DM 2023-02-03 2023-02-01+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $9.72 -5,102 91.6K -5% -$49.6K
DM 2022-08-05 2022-08-03+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $24.39 -13.3K 91.6K -13% -$325.1K
DM 2022-08-05 2022-08-03+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx $0.96 +13.3K 104.3K +15% +$12.8K
DM 2022-06-27 2022-06-24+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $19.12 -18.2K 91.6K -17% -$347.7K
DM 2022-06-27 2022-06-24+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx $0.96 +18.2K 104.7K +21% +$17.5K
DM 2022-06-22 2022-06-17+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $15.05 -9,000 91.6K -9% -$135.5K
DM 2022-06-22 2022-06-17+ MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx $0.96 +9,000 99.7K +10% +$8,640
D 2022-06-17 2022-06-15 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx $0.96 +1,000 92.6K +1% +$960
D 2022-06-17 2022-06-15 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $15.02 -1,000 91.6K -1% -$15.0K
D 2022-06-15 2022-06-13 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx $0.96 +13.3K 104.9K +15% +$12.8K
D 2022-06-15 2022-06-13 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $13.54 -13.3K 91.6K -13% -$180.5K
2021-11-05 2021-11-05 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale $39.08 -2,800 88.8K -3% -$109.4K
DM 2021-09-10 2021-09-08 MASS 908 Devices Inc. Griffith Joseph H. IV CFO S - Sale+OE $37.61 -49.9K 106.7K -32% -$1.88M
DM 2021-09-10 2021-09-08 MASS 908 Devices Inc. Griffith Joseph H. IV CFO M - OptEx $0.5628 +49.9K 137.7K +57% +$28.1K

Purchase Sale Sale after option exercise All abbreviations