Insider Transactions last 24 months for 908 Devices Inc. - NSDQ: MASS
Transactions
All
Buy
Sell
Option Exercise
Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Mccallion Kevin J. SVP, Products and Production 03/02/2026 DS Direct COM 7 $7.00 $49.00 44,918 Griffith Joseph H. Iv Chief Financial Officer 02/02/2026 DS Direct COM 23,175 $6.18 $143,221.50 139,896 Knopp Kevin J. President and CEO 02/02/2026 DS Direct COM 34,764 $6.18 $214,841.52 795,968 Griffith Joseph H. Iv Chief Financial Officer 02/01/2026 AM Direct COM 43,473 $0.00 $0.00 163,071 Griffith Joseph H. Iv Chief Financial Officer 02/01/2026 AM Direct COM 11,260 $0.00 $0.00 119,598 Griffith Joseph H. Iv Chief Financial Officer 02/01/2026 AM Direct COM 10,306 $0.00 $0.00 108,338 Griffith Joseph H. Iv Chief Financial Officer 02/01/2026 AM Direct COM 5,102 $0.00 $0.00 98,032 Knopp Kevin J. President and CEO 02/01/2026 AM Direct COM 66,288 $0.00 $0.00 830,732 Knopp Kevin J. President and CEO 02/01/2026 AM Direct COM 17,007 $0.00 $0.00 764,444 Knopp Kevin J. President and CEO 02/01/2026 AM Direct COM 13,449 $0.00 $0.00 747,437 Knopp Kevin J. President and CEO 02/01/2026 AM Direct COM 11,255 $0.00 $0.00 733,988 Brown Christopher D. Director 02/01/2026 AM Direct COM 10,992 $0.00 $0.00 985,559 Brown Christopher D. Director 02/01/2026 AM Direct COM 7,418 $0.00 $0.00 974,567 Brown Christopher D. Director 02/01/2026 AM Direct COM 5,027 $0.00 $0.00 967,149 Spoto Mark Director 12/30/2025 AG Direct COM 928 $0.00 $0.00 75,263 Spoto Mark Director 12/30/2025 DG Indirect COM 928 $0.00 $0.00 0 Spoto Mark Director 10/14/2025 AW Indirect COM 928 $0.00 $0.00 928 Griffith Joseph H. Iv Chief Financial Officer 10/03/2025 DS Direct COM 4,292 $9.05 $38,849.04 92,930 Griffith Joseph H. Iv Chief Financial Officer 10/02/2025 DS Direct COM 708 $9.04 $6,397.77 97,222 Griffith Joseph H. Iv Chief Financial Officer 09/19/2025 DS Direct COM 5,000 $7.07 $35,338.50 97,930 Leonhart Michele M. Director 06/25/2025 AM Direct COM 6,485 $0.00 $0.00 6,485 Turner Michael S. Chief Legal & Admin Officer 06/18/2025 DS Direct COM 1,373 $7.50 $10,297.50 0 Turner Michael S. Chief Legal & Admin Officer 06/17/2025 DS Direct COM 7,148 $7.51 $53,652.89 1,373 Turner Michael S. Chief Legal & Admin Officer 06/16/2025 DS Direct COM 16,082 $7.51 $120,838.54 8,521 Spoto Mark Director 06/11/2025 AM Direct COM 11,364 $0.00 $0.00 74,335
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Spoto Mark Director 12/30/2025 AG Direct COM 928 $0.00 $0.00 75,263 Spoto Mark Director 10/14/2025 AW Indirect COM 928 $0.00 $0.00 928 Knopp Kevin J. President and CEO 05/15/2025 AP Direct COM 15,000 $4.44 $66,595.50 722,733 Knopp Kevin J. President and CEO 05/14/2025 AP Direct COM 15,000 $4.32 $64,788.00 707,733 Spoto Mark Director 05/14/2025 AP Direct COM 3,000 $4.25 $12,750.00 62,971 Spoto Mark Director 05/14/2025 AP Direct COM 7,000 $4.30 $30,100.00 59,971 Knopp Kevin J. President and CEO 05/13/2024 AP Direct COM 10,000 $6.42 $64,200.00 508,981 Knopp Kevin J. President and CEO 05/10/2024 AP Direct COM 10,000 $5.77 $57,700.00 498,981 Knopp Kevin J. President and CEO 05/09/2024 AP Direct COM 10,000 $5.83 $58,300.00 488,981 Knopp Kevin J. President and CEO 05/08/2024 AP Direct COM 10,000 $5.72 $57,200.00 478,981 Knopp Kevin J. President and CEO 05/07/2024 AP Direct COM 10,000 $5.60 $56,000.00 468,981
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Mccallion Kevin J. SVP, Products and Production 03/02/2026 DS Direct COM 7 $7.00 $49.00 44,918 Griffith Joseph H. Iv Chief Financial Officer 02/02/2026 DS Direct COM 23,175 $6.18 $143,221.50 139,896 Knopp Kevin J. President and CEO 02/02/2026 DS Direct COM 34,764 $6.18 $214,841.52 795,968 Spoto Mark Director 12/30/2025 DG Indirect COM 928 $0.00 $0.00 0 Griffith Joseph H. Iv Chief Financial Officer 10/03/2025 DS Direct COM 4,292 $9.05 $38,849.04 92,930 Griffith Joseph H. Iv Chief Financial Officer 10/02/2025 DS Direct COM 708 $9.04 $6,397.77 97,222 Griffith Joseph H. Iv Chief Financial Officer 09/19/2025 DS Direct COM 5,000 $7.07 $35,338.50 97,930 Turner Michael S. Chief Legal & Admin Officer 06/18/2025 DS Direct COM 1,373 $7.50 $10,297.50 0 Turner Michael S. Chief Legal & Admin Officer 06/17/2025 DS Direct COM 7,148 $7.51 $53,652.89 1,373 Turner Michael S. Chief Legal & Admin Officer 06/16/2025 DS Direct COM 16,082 $7.51 $120,838.54 8,521 Griffith Joseph H. Iv Chief Financial Officer 06/04/2025 DS Direct COM 6,940 $7.08 $49,135.20 102,930 Brown Christopher D. Chief Product Officer 02/03/2025 DS Direct COM 3,641 $2.33 $8,501.37 962,122 Brown Christopher D. Chief Product Officer 02/03/2025 DS Direct COM 2,459 $2.34 $5,762.91 965,763 Brown Christopher D. Chief Product Officer 02/03/2025 DS Direct COM 1,667 $2.36 $3,926.45 968,222 Knopp Kevin J. President and CEO 02/03/2025 DS Direct COM 6,524 $2.32 $15,124.59 692,733 Knopp Kevin J. President and CEO 02/03/2025 DS Direct COM 5,159 $2.31 $11,920.90 699,257 Knopp Kevin J. President and CEO 02/03/2025 DS Direct COM 4,318 $2.33 $10,063.96 704,416 Turner Michael S. Chief Legal & Admin Officer 02/03/2025 DS Direct COM 4,162 $2.32 $9,654.18 24,603 Turner Michael S. Chief Legal & Admin Officer 02/03/2025 DS Direct COM 3,807 $2.32 $8,831.10 28,765 Turner Michael S. Chief Legal & Admin Officer 02/03/2025 DS Direct COM 1,703 $2.36 $4,013.63 32,572 Griffith Joseph H. Iv Chief Financial Officer 02/03/2025 DS Direct COM 4,321 $2.35 $10,167.31 109,870 Griffith Joseph H. Iv Chief Financial Officer 02/03/2025 DS Direct COM 3,955 $2.34 $9,234.93 114,191 Griffith Joseph H. Iv Chief Financial Officer 02/03/2025 DS Direct COM 1,960 $2.34 $4,582.48 118,146
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Griffith Joseph H. Iv Chief Financial Officer 02/01/2026 AM Direct COM 43,473 $0.00 $0.00 163,071 Griffith Joseph H. Iv Chief Financial Officer 02/01/2026 AM Direct COM 11,260 $0.00 $0.00 119,598 Griffith Joseph H. Iv Chief Financial Officer 02/01/2026 AM Direct COM 10,306 $0.00 $0.00 108,338 Griffith Joseph H. Iv Chief Financial Officer 02/01/2026 AM Direct COM 5,102 $0.00 $0.00 98,032 Knopp Kevin J. President and CEO 02/01/2026 AM Direct COM 66,288 $0.00 $0.00 830,732 Knopp Kevin J. President and CEO 02/01/2026 AM Direct COM 17,007 $0.00 $0.00 764,444 Knopp Kevin J. President and CEO 02/01/2026 AM Direct COM 13,449 $0.00 $0.00 747,437 Knopp Kevin J. President and CEO 02/01/2026 AM Direct COM 11,255 $0.00 $0.00 733,988 Brown Christopher D. Director 02/01/2026 AM Direct COM 10,992 $0.00 $0.00 985,559 Brown Christopher D. Director 02/01/2026 AM Direct COM 7,418 $0.00 $0.00 974,567 Brown Christopher D. Director 02/01/2026 AM Direct COM 5,027 $0.00 $0.00 967,149 Leonhart Michele M. Director 06/25/2025 AM Direct COM 6,485 $0.00 $0.00 6,485 Spoto Mark Director 06/11/2025 AM Direct COM 11,364 $0.00 $0.00 74,335 Crandell Keith Director 06/11/2025 AM Direct COM 11,364 $0.00 $0.00 25,291 Eisenberg Marcia Director 06/11/2025 AM Direct COM 11,364 $0.00 $0.00 25,957 Eloi Fenel M Director 06/11/2025 AM Direct COM 11,364 $0.00 $0.00 26,814 George Jeffrey P. Director 06/11/2025 AM Direct COM 11,364 $0.00 $0.00 26,814 Hunt Anthony Director 06/11/2025 AM Direct COM 11,364 $0.00 $0.00 30,085 Hrusovsky E Kevin Director 06/11/2025 AM Direct COM 11,364 $0.00 $0.00 151,307 Hunt Anthony Director 03/02/2025 AM Direct COM 2,058 $0.00 $0.00 18,721 Brown Christopher D. Chief Product Officer 02/01/2025 AM Direct COM 10,991 $0.00 $0.00 969,889 Brown Christopher D. Chief Product Officer 02/01/2025 AM Direct COM 7,418 $0.00 $0.00 958,898 Brown Christopher D. Chief Product Officer 02/01/2025 AM Direct COM 5,027 $0.00 $0.00 951,480 Knopp Kevin J. President and CEO 02/01/2025 AM Direct COM 17,007 $0.00 $0.00 708,734 Knopp Kevin J. President and CEO 02/01/2025 AM Direct COM 13,448 $0.00 $0.00 691,727
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Transaction Type Key A = Acquired, D = Disposed A = Grant, award or other acquisition pursuant to Rule 16b-3(d)
C = Conversion of derivative security |
D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) |
E = Expiration of short derivative position |
F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. |
G = Gift |
H = Expiration (or cancellation) of long derivative position with value received |
I = Discretionary transaction in accordance with Rule 16b-3(f) |
J = Other |
L = Small acquisition under Rule 16a-6 |
M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 |
O = Exercise of out-of-the-money derivative security |
P = Open market or private purchase |
S = Open market or private sale |
U = Disposition pursuant to a tender of shares in a change of control transaction |
W = Acquisition or disposition by will or the laws of descent and distribution |
X = Exercise of in-the-money or at-the-money derivative security |
Z = Deposit into or withdrawal from voting trust
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