United States Machinery, Equipment & Components

908 Devices Inc. (MASS)

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Over the past ninety days, 908 Devices Inc. recorded twenty-four insider trading transactions, all representing sales totaling approximately 5.29 million dollars. Key executives and entities, including CEO Kevin Knopp, executed these divestments through planned or proposed programs. This activity follows the May results financiers report, occurring while the stock trades near its yearly peak.
Ticker: MASS Exchange: NMS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for 908 Devices Inc.. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Planned sale 5 Aug 2026
Value US$1,284,892.93 | Price 263.73 | Shares 48,857 (+48.9%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-07 2026-08-05 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
48,857 +48.9%
263.73
US$1,284,893 		48,857 +48.9% 263.73 US$1,284,893
2026-08-06 2026-08-04 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
52,635 -10.8%
361.21
US$4,285,203 		52,635 -10.8% 361.21 US$4,285,203
2026-07-07 2026-07-02 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
27,568 +29.2%
50.22
US$4,183,994 		27,568 +29.2% 50.22 US$4,183,994
2026-07-07 2026-07-02 PlS Planned sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
222 -0.0%
9.07
US$2,014 		222 -0.0% 9.07 US$2,014
2026-07-02 2026-06-30 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
20,000 -2.3%
8.84
US$176,800 		20,000 -2.3% 8.84 US$176,800
2026-06-30 2026-06-26 PlS Planned sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
2,798 -0.4%
9.09
US$25,434 		2,798 -0.4% 9.09 US$25,434
2026-06-25 2026-06-25 PlS Planned sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
16,388 -2.2%
9.10
US$149,131 		16,388 -2.2% 9.10 US$149,131
2026-06-25 2026-06-24 PlS Planned sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
40,535 -5.1%
9.14
US$370,490 		40,535 -5.1% 9.14 US$370,490
2026-06-25 2026-06-23 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
9,900 -1.1%
9.04
US$89,496 		9,900 -1.1% 9.04 US$89,496
2026-06-25 2026-06-23 PlS Planned sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
3,422 -0.4%
9.06
US$31,003 		3,422 -0.4% 9.06 US$31,003
2026-06-24 2026-06-23 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
3,050 -0.1%
9.00
US$27,463 		3,050 -0.1% 9.00 US$27,463
2026-06-23 2026-06-23 PrS Proposed sale
2.5
Kevin Knopp

Officer

Officer
80,000
9.05
US$724,000 		80,000 9.05 US$724,000
2026-06-24 2026-06-22 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
4,668 -0.1%
8.99
US$41,965 		4,668 -0.1% 8.99 US$41,965
2026-06-05 2026-06-04 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
100 -0.0%
9.00
US$900 		100 -0.0% 9.00 US$900
2026-06-04 2026-06-04 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
39,782 -0.8%
8.97
US$356,856 		39,782 -0.8% 8.97 US$356,856
2026-06-04 2026-06-03 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
20,000 -2.2%
8.73
US$174,600 		20,000 -2.2% 8.73 US$174,600
2026-06-03 2026-06-03 PrS Proposed sale
1.9
CHRISTOPHER BROWN

Officer

Officer
70,000
8.85
US$619,500 		70,000 8.85 US$619,500
2026-06-04 2026-06-02 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
2,500 -0.1%
8.95
US$22,375 		2,500 -0.1% 8.95 US$22,375
2026-05-29 2026-05-28 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
170,442 -3.3%
8.66
US$1,475,925 		170,442 -3.3% 8.66 US$1,475,925
2026-05-29 2026-05-28 PlS Planned sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
6,940 -5.0%
9.03
US$62,668 		6,940 -5.0% 9.03 US$62,668
2026-05-29 2026-05-28 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
30,000 -3.2%
9.00
US$270,000 		30,000 -3.2% 9.00 US$270,000
2026-05-28 2026-05-28 PrS Proposed sale
1.8
JOSEPH GRIFFITH

Officer

Officer
6,940
8.16
US$56,630 		6,940 8.16 US$56,630
2026-05-29 2026-05-27 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
15,000 -0.3%
8.25
US$123,791 		15,000 -0.3% 8.25 US$123,791
2026-05-29 2026-05-27 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
1,500 -0.0%
8.25
US$12,375 		1,500 -0.0% 8.25 US$12,375
2026-05-13 2026-05-11 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
5,000 -0.1%
8.25
US$41,257 		5,000 -0.1% 8.25 US$41,257
2026-05-11 2026-05-08 S Sale
Kenneweg John

SVP, Sales & Product Marketing

Officer
18,255 -24.0%
8.11
US$148,048 		18,255 -24.0% 8.11 US$148,048
2026-05-08 2026-05-08 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
3,025 -0.1%
8.20
US$24,805 		3,025 -0.1% 8.20 US$24,805
2026-05-08 2026-05-08 PrS Proposed sale
JOHN WESLEY KENNEWEG

Officer; Director

Executive Director
18,255
8.11
US$148,085 		18,255 8.11 US$148,085
2026-05-08 2026-05-07 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
12,819 -0.2%
8.20
US$105,170 		12,819 -0.2% 8.20 US$105,170
2026-05-08 2026-05-06 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
57,365 -1.1%
8.06
US$462,155 		57,365 -1.1% 8.06 US$462,155
2026-05-08 2026-05-06 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
5,000 -0.1%
8.00
US$40,000 		5,000 -0.1% 8.00 US$40,000
2026-05-07 2026-05-06 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
20,000 -2.1%
7.23
US$144,600 		20,000 -2.1% 7.23 US$144,600
2026-05-04 2026-05-01 S Sale
Kenneweg John

SVP, Sales & Product Marketing

Officer
7,787 -9.3%
6.83
US$53,185 		7,787 -9.3% 6.83 US$53,185
2026-04-14 2026-04-10 PlS Planned sale
McCallion Kevin J.

SVP, Products and Production

Officer
2,693 -5.7%
7.01
US$18,878 		2,693 -5.7% 7.01 US$18,878
2026-04-14 2026-04-10 PlS Planned sale
McCallion Kevin J.

SVP, Products and Production

Officer
2,693 -5.7%
7.01
US$18,878 		2,693 -5.7% 7.01 US$18,878
2026-04-10 2026-04-10 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
17,578 -1.8%
7.07
US$124,276 		17,578 -1.8% 7.07 US$124,276
2026-04-10 2026-04-09 PlS Planned sale
McCallion Kevin J.

SVP, Products and Production

Officer
5,420 -10.8%
7.03
US$38,103 		5,420 -10.8% 7.03 US$38,103
2026-04-10 2026-04-09 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
7,392 -0.8%
7.04
US$52,040 		7,392 -0.8% 7.04 US$52,040
2026-04-10 2026-04-08 PlS Planned sale
McCallion Kevin J.

SVP, Products and Production

Officer
18,580 -29.3%
7.05
US$130,989 		18,580 -29.3% 7.05 US$130,989
2026-04-10 2026-04-08 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
15,030 -1.5%
7.05
US$105,962 		15,030 -1.5% 7.05 US$105,962
2026-04-08 2026-04-08 PrS Proposed sale
KEVIN MCCALLION

Officer

Officer
27,000
6.76
US$182,520 		27,000 6.76 US$182,520
2026-04-08 2026-04-08 PrS Proposed sale
1.9
CHRISTOPHER BROWN

Director

Non-Executive Director
100,000
6.76
US$676,000 		100,000 6.76 US$676,000
2026-03-04 2026-03-02 PlS Planned sale
McCallion Kevin J.

SVP, Products and Production

Officer
7 -0.0%
7.00
US$49 		7 -0.0% 7.00 US$49
2026-02-03 2026-02-02 S Sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
34,764 -4.2%
6.18
US$214,842 		34,764 -4.2% 6.18 US$214,842
2026-02-03 2026-02-02 S Sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
23,175 -14.2%
6.18
US$143,222 		23,175 -14.2% 6.18 US$143,222
2026-02-03 2026-02-02 S Sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
34,764 -4.2%
6.18
US$214,842 		34,764 -4.2% 6.18 US$214,842
2026-02-03 2026-02-02 S Sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
23,175 -14.2%
6.18
US$143,222 		23,175 -14.2% 6.18 US$143,222
2025-10-06 2025-10-03 PlS Planned sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
4,292 -4.4%
9.05
US$38,849 		4,292 -4.4% 9.05 US$38,849
2025-10-06 2025-10-02 PlS Planned sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
708 -0.7%
9.04
US$6,398 		708 -0.7% 9.04 US$6,398
2025-10-02 2025-10-02 PrS Proposed sale
1.8
JOSEPH H GRIFFITH IV

Officer

Officer
5,000
8.99
US$44,950 		5,000 8.99 US$44,950
2025-09-23 2025-09-19 PlS Planned sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
5,000 -4.9%
7.07
US$35,338 		5,000 -4.9% 7.07 US$35,338
2025-09-19 2025-09-19 PrS Proposed sale
1.8
JOSEPH H GRIFFITH IV

Officer

Officer
5,000
6.82
US$34,100 		5,000 6.82 US$34,100
2025-06-18 2025-06-18 PlS Planned sale
1.9
Turner Michael S.

Chief Legal & Admin Officer

Officer
1,373 -100.0%
7.50
US$10,298 		1,373 -100.0% 7.50 US$10,298
2025-06-18 2025-06-17 PlS Planned sale
1.9
Turner Michael S.

Chief Legal & Admin Officer

Officer
7,148 -83.9%
7.51
US$53,653 		7,148 -83.9% 7.51 US$53,653
2025-06-18 2025-06-16 PlS Planned sale
1.9
Turner Michael S.

Chief Legal & Admin Officer

Officer
16,082 -65.4%
7.51
US$120,839 		16,082 -65.4% 7.51 US$120,839
2025-06-16 2025-06-16 PrS Proposed sale
1.9
MICHAEL S TURNER

Officer

Officer
24,603
7.31
US$179,848 		24,603 7.31 US$179,848
2025-06-06 2025-06-04 PlS Planned sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
6,940 -6.3%
7.08
US$49,135 		6,940 -6.3% 7.08 US$49,135
2025-06-04 2025-06-04 PrS Proposed sale
1.8
JOSEPH H GRIFFITH IV

Officer

Officer
6,940
6.62
US$45,943 		6,940 6.62 US$45,943
2025-05-19 2025-05-15 B Purchase
2.5
Knopp Kevin J.

President and CEO

Executive Director
15,000 +2.1%
4.44
US$66,596 		15,000 +2.1% 4.44 US$66,596
2025-05-15 2025-05-14 B Purchase
3.3
Spoto Mark
Non-Executive Director
3,000 +5.0%
4.25
US$12,750 		3,000 +5.0% 4.25 US$12,750
2025-05-15 2025-05-14 B Purchase
3.3
Spoto Mark
Non-Executive Director
7,000 +13.2%
4.30
US$30,100 		7,000 +13.2% 4.30 US$30,100
2025-05-14 2025-05-14 B Purchase
2.5
Knopp Kevin J.

President and CEO

Executive Director
15,000 +2.2%
4.32
US$64,788 		15,000 +2.2% 4.32 US$64,788
2025-02-04 2025-02-03 S Sale
1.9
Brown Christopher D.

Chief Product Officer

Officer
3,641 -0.4%
2.33
US$8,501 		3,641 -0.4% 2.33 US$8,501
2025-02-04 2025-02-03 S Sale
1.9
Brown Christopher D.

Chief Product Officer

Officer
2,459 -0.3%
2.34
US$5,763 		2,459 -0.3% 2.34 US$5,763
2025-02-04 2025-02-03 S Sale
1.9
Brown Christopher D.

Chief Product Officer

Officer
1,667 -0.2%
2.36
US$3,926 		1,667 -0.2% 2.36 US$3,926
2025-02-04 2025-02-03 S Sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
4,321 -3.8%
2.35
US$10,167 		4,321 -3.8% 2.35 US$10,167
2025-02-04 2025-02-03 S Sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
3,955 -3.3%
2.34
US$9,235 		3,955 -3.3% 2.34 US$9,235
2025-02-04 2025-02-03 S Sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
1,960 -1.6%
2.34
US$4,582 		1,960 -1.6% 2.34 US$4,582
2025-02-04 2025-02-03 S Sale
1.9
Turner Michael S.

Chief Legal & Admin Officer

Officer
4,162 -14.5%
2.32
US$9,654 		4,162 -14.5% 2.32 US$9,654
2025-02-04 2025-02-03 S Sale
1.9
Turner Michael S.

Chief Legal & Admin Officer

Officer
3,807 -11.7%
2.32
US$8,831 		3,807 -11.7% 2.32 US$8,831
2025-02-04 2025-02-03 S Sale
1.9
Turner Michael S.

Chief Legal & Admin Officer

Officer
1,703 -5.0%
2.36
US$4,014 		1,703 -5.0% 2.36 US$4,014
2025-02-04 2025-02-03 S Sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
6,524 -0.9%
2.32
US$15,125 		6,524 -0.9% 2.32 US$15,125
2025-02-04 2025-02-03 S Sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
5,159 -0.7%
2.31
US$11,921 		5,159 -0.7% 2.31 US$11,921
2025-02-04 2025-02-03 S Sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
4,318 -0.6%
2.33
US$10,064 		4,318 -0.6% 2.33 US$10,064
2024-05-13 2024-05-13 B Purchase
2.5
Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.0%
6.42
US$64,200 		10,000 +2.0% 6.42 US$64,200
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