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United States Machinery, Equipment & Components

908 Devices Inc. (MASS)

Track

Over the last 90 days, 908 Devices Inc. has seen significant insider selling, with a net value of -$2.87 million. A total of 29 transactions were recorded, primarily sales. The company's stock has performed strongly, up 35.8% in the last 90 days, and is near its 52-week high. The last earnings report showed a 50% EPS beat.
Stock chart
Ticker: MASS Exchange: NMS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Brown Christopher D.
1 sale — total 100,000 USD
Planned sale 4 Jun 2026
Value US$617,725.98 | Price 226.83 | Shares 22,545
Sale 4 Jun 2026
Value US$4,381,190.18 | Price 329.77 | Shares 99,727
Planned sale 3 Jun 2026
Value US$100,000.00 | Price 8.73 | Shares 1,000
Proposed sale 3 Jun 2026
Value US$100,000.00 | Price 8.85 | Shares 1,000
Sale 2 Jun 2026
Value US$100,000.00 | Price 8.95 | Shares 1,000
Sale 28 May 2026
Value US$1,475,925.45 | Price 8.66 | Shares 170,442
Planned sale 28 May 2026
Value US$62,668.20 | Price 9.03 | Shares 6,940
Planned sale 28 May 2026
Value US$270,000.00 | Price 9.00 | Shares 30,000
Proposed sale 28 May 2026
Value US$56,630.40 | Price 8.16 | Shares 6,940
Sale 27 May 2026
Value US$123,790.50 | Price 8.25 | Shares 15,000
Sale 27 May 2026
Value US$12,375.00 | Price 8.25 | Shares 1,500
Sale 11 May 2026
Value US$41,257.00 | Price 8.25 | Shares 5,000
Sale 8 May 2026
Value US$148,048.05 | Price 8.11 | Shares 18,255
Sale 8 May 2026
Value US$24,805.00 | Price 8.20 | Shares 3,025
Proposed sale 8 May 2026
Value US$148,084.56 | Price 8.11 | Shares 18,255
Sale 7 May 2026
Value US$105,169.64 | Price 8.20 | Shares 12,819
Sale 6 May 2026
Value US$462,155.39 | Price 8.06 | Shares 57,365
Sale 6 May 2026
Value US$40,000.00 | Price 8.00 | Shares 5,000
Planned sale 6 May 2026
Value US$144,600.00 | Price 7.23 | Shares 20,000
Sale 1 May 2026
Value US$53,185.21 | Price 6.83 | Shares 7,787
Planned sale 10 Apr 2026
Value US$18,877.93 | Price 7.01 | Shares 2,693
Planned sale 10 Apr 2026
Value US$18,877.93 | Price 7.01 | Shares 2,693
Planned sale 10 Apr 2026
Value US$124,276.46 | Price 7.07 | Shares 17,578
Planned sale 9 Apr 2026
Value US$38,102.60 | Price 7.03 | Shares 5,420
Planned sale 9 Apr 2026
Value US$52,039.68 | Price 7.04 | Shares 7,392
Planned sale 8 Apr 2026
Value US$130,989.00 | Price 7.05 | Shares 18,580
Planned sale 8 Apr 2026
Value US$105,961.50 | Price 7.05 | Shares 15,030
Proposed sale 8 Apr 2026
Value US$182,520.00 | Price 6.76 | Shares 27,000
Proposed sale 8 Apr 2026
Value US$676,000.00 | Price 6.76 | Shares 100,000
Planned sale 2 Mar 2026
Value US$49.00 | Price 7.00 | Shares 7
Sale 2 Feb 2026
Value US$214,841.52 | Price 6.18 | Shares 34,764
Sale 2 Feb 2026
Value US$214,841.52 | Price 6.18 | Shares 34,764
Sale 2 Feb 2026
Value US$143,221.50 | Price 6.18 | Shares 23,175
Sale 2 Feb 2026
Value US$143,221.50 | Price 6.18 | Shares 23,175
Planned sale 3 Oct 2025
Value US$38,849.04 | Price 9.05 | Shares 4,292
Planned sale 2 Oct 2025
Value US$6,397.77 | Price 9.04 | Shares 708
Proposed sale 2 Oct 2025
Value US$44,950.00 | Price 8.99 | Shares 5,000
Planned sale 19 Sep 2025
Value US$35,338.50 | Price 7.07 | Shares 5,000
Proposed sale 19 Sep 2025
Value US$34,100.00 | Price 6.82 | Shares 5,000
Planned sale 18 Jun 2025
Value US$10,297.50 | Price 7.50 | Shares 1,373
Planned sale 17 Jun 2025
Value US$53,652.89 | Price 7.51 | Shares 7,148
Planned sale 16 Jun 2025
Value US$120,838.54 | Price 7.51 | Shares 16,082
Proposed sale 16 Jun 2025
Value US$179,847.93 | Price 7.31 | Shares 24,603
Planned sale 4 Jun 2025
Value US$49,135.20 | Price 7.08 | Shares 6,940
Proposed sale 4 Jun 2025
Value US$45,942.80 | Price 6.62 | Shares 6,940
Buy 15 May 2025
Value US$66,595.50 | Price 4.44 | Shares 15,000
Buy 14 May 2025
Value US$12,750.00 | Price 4.25 | Shares 3,000
Buy 14 May 2025
Value US$30,100.00 | Price 4.30 | Shares 7,000
Buy 14 May 2025
Value US$64,788.00 | Price 4.32 | Shares 15,000
Sale 3 Feb 2025
Value US$8,501.37 | Price 2.33 | Shares 3,641
Sale 3 Feb 2025
Value US$5,762.91 | Price 2.34 | Shares 2,459
Sale 3 Feb 2025
Value US$3,926.45 | Price 2.36 | Shares 1,667
Sale 3 Feb 2025
Value US$10,167.31 | Price 2.35 | Shares 4,321
Sale 3 Feb 2025
Value US$9,234.92 | Price 2.34 | Shares 3,955
Sale 3 Feb 2025
Value US$4,582.48 | Price 2.34 | Shares 1,960
Sale 3 Feb 2025
Value US$9,654.18 | Price 2.32 | Shares 4,162
Sale 3 Feb 2025
Value US$8,831.10 | Price 2.32 | Shares 3,807
Sale 3 Feb 2025
Value US$4,013.63 | Price 2.36 | Shares 1,703
Sale 3 Feb 2025
Value US$15,124.59 | Price 2.32 | Shares 6,524
Sale 3 Feb 2025
Value US$11,920.90 | Price 2.31 | Shares 5,159
Sale 3 Feb 2025
Value US$10,063.96 | Price 2.33 | Shares 4,318
Buy 13 May 2024
Value US$64,200.00 | Price 6.42 | Shares 10,000
Buy 10 May 2024
Value US$57,700.00 | Price 5.77 | Shares 10,000
Buy 9 May 2024
Value US$58,300.00 | Price 5.83 | Shares 10,000
Buy 8 May 2024
Value US$57,200.00 | Price 5.72 | Shares 10,000
Buy 7 May 2024
Value US$56,000.00 | Price 5.60 | Shares 10,000
Buy 7 May 2024
Value US$56,000.00 | Price 5.60 | Shares 10,000
Proposed sale 2 Feb 2024
Value US$70,016.31 | Price 7.21 | Shares 9,711
Planned sale 2 Feb 2024
Value US$68,873.33 | Price 7.09 | Shares 9,711
Sale 1 Feb 2024
Value US$25,203.88 | Price 6.97 | Shares 3,616
Sale 1 Feb 2024
Value US$11,354.82 | Price 7.03 | Shares 1,616
Sale 1 Feb 2024
Value US$16,549.15 | Price 7.02 | Shares 2,358
Sale 1 Feb 2024
Value US$11,181.17 | Price 6.99 | Shares 1,599
Sale 1 Feb 2024
Value US$34,884.05 | Price 7.02 | Shares 4,972
Sale 1 Feb 2024
Value US$28,576.59 | Price 6.97 | Shares 4,099
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
2026-06-05 2026-06-04 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
22,545 +40.9%
226.83
US$617,726 		22,545 +40.9% 226.83 US$617,726
2026-06-04 2026-06-04 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
99,727 +29.2%
329.77
US$4,381,190 		99,727 +29.2% 329.77 US$4,381,190
2026-06-04 2026-06-03 PlS Planned sale
1.9
Brown Christopher D.
Non-Executive Director
30,172 +2.9%
94.12
US$1,791,718 		30,172 +2.9% 94.12 US$1,791,718
2026-06-03 2026-06-03 PrS Proposed sale
1.9
CHRISTOPHER BROWN

Officer

Officer
1,000
8.85
US$100,000 		1,000 8.85 US$100,000
2026-06-04 2026-06-02 S Sale
3.3
AWM Investment Company, Inc.
Large shareholder
1,000 -0.1%
8.95
US$100,000 		1,000 -0.1% 8.95 US$100,000
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
2024-05-10 2024-05-10 B Purchase
2.5
Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.0%
5.77
US$57,700 		10,000 +2.0% 5.77 US$57,700
2024-05-09 2024-05-09 B Purchase
2.5
Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.1%
5.83
US$58,300 		10,000 +2.1% 5.83 US$58,300
2024-05-08 2024-05-08 B Purchase
2.5
Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.1%
5.72
US$57,200 		10,000 +2.1% 5.72 US$57,200
2024-05-07 2024-05-07 B Purchase
2.5
Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.2%
5.60
US$56,000 		10,000 +2.2% 5.60 US$56,000
2024-05-07 2024-05-07 B Purchase
2.5
Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.2%
5.60
US$56,000 		10,000 +2.2% 5.60 US$56,000
2024-02-02 2024-02-02 PrS Proposed sale
1.8
JOSEPH H GRIFFITH IV

Officer

Officer
9,711
7.21
US$70,016 		9,711 7.21 US$70,016
2024-02-02 2024-02-02 PlS Planned sale
1.8
Griffith Joseph H. IV

Chief Financial Officer

Officer
9,711 -10.8%
7.09
US$68,873 		9,711 -10.8% 7.09 US$68,873
2024-02-02 2024-02-01 S Sale
1.9
Turner Michael S.

Chief Legal & Admin Officer

Officer
3,616 -28.4%
6.97
US$25,204 		3,616 -28.4% 6.97 US$25,204
2024-02-02 2024-02-01 S Sale
1.9
Turner Michael S.

Chief Legal & Admin Officer

Officer
1,616 -11.3%
7.03
US$11,355 		1,616 -11.3% 7.03 US$11,355
2024-02-02 2024-02-01 S Sale
1.9
Brown Christopher D.

Chief Product Officer

Officer
2,358 -0.3%
7.02
US$16,549 		2,358 -0.3% 7.02 US$16,549
2024-02-02 2024-02-01 S Sale
1.9
Brown Christopher D.

Chief Product Officer

Officer
1,599 -0.2%
6.99
US$11,181 		1,599 -0.2% 6.99 US$11,181
2024-02-02 2024-02-01 S Sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
4,972 -1.2%
7.02
US$34,884 		4,972 -1.2% 7.02 US$34,884
2024-02-02 2024-02-01 S Sale
2.5
Knopp Kevin J.

President and CEO

Executive Director
4,099 -1.0%
6.97
US$28,577 		4,099 -1.0% 6.97 US$28,577
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