Stock chart
Ticker: MASS Exchange: NMS


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Purchase Sale Planned purchase Planned sale Net purchase Net sale Earnings
Earnings
 
Value bought

Past 90 days

 
Value sold

Past 90 days

 
Net insiders buying

Past 90 days

 
Trades (buy and sell)

Past 90 days

Abbreviations B: Buy, S: Sell, PP: Planned purchase, PS: Planned 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
2025-02-04 2025-02-03 S Sale

Brown Christopher D.

Chief Product Officer

Officer
3,641 -0.4%
2.33
USD 8,501
3,641 -0.4% 2.33 USD 8,501
2025-02-04 2025-02-03 S Sale

Brown Christopher D.

Chief Product Officer

Officer
2,459 -0.3%
2.34
USD 5,763
2,459 -0.3% 2.34 USD 5,763
2025-02-04 2025-02-03 S Sale

Brown Christopher D.

Chief Product Officer

Officer
1,667 -0.2%
2.36
USD 3,926
1,667 -0.2% 2.36 USD 3,926
2025-02-04 2025-02-03 S Sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
4,321 -3.8%
2.35
USD 10,167
4,321 -3.8% 2.35 USD 10,167
2025-02-04 2025-02-03 S Sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
3,955 -3.3%
2.34
USD 9,235
3,955 -3.3% 2.34 USD 9,235
2025-02-04 2025-02-03 S Sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
1,960 -1.6%
2.34
USD 4,582
1,960 -1.6% 2.34 USD 4,582
2025-02-04 2025-02-03 S Sale

Turner Michael S.

Chief Legal & Admin Officer

Officer
4,162 -14.5%
2.32
USD 9,654
4,162 -14.5% 2.32 USD 9,654
2025-02-04 2025-02-03 S Sale

Turner Michael S.

Chief Legal & Admin Officer

Officer
3,807 -11.7%
2.32
USD 8,831
3,807 -11.7% 2.32 USD 8,831
2025-02-04 2025-02-03 S Sale

Turner Michael S.

Chief Legal & Admin Officer

Officer
1,703 -5.0%
2.36
USD 4,014
1,703 -5.0% 2.36 USD 4,014
2025-02-04 2025-02-03 S Sale

Knopp Kevin J.

President and CEO

Executive Director
6,524 -0.9%
2.32
USD 15,125
6,524 -0.9% 2.32 USD 15,125
2025-02-04 2025-02-03 S Sale

Knopp Kevin J.

President and CEO

Executive Director
5,159 -0.7%
2.31
USD 11,921
5,159 -0.7% 2.31 USD 11,921
2025-02-04 2025-02-03 S Sale

Knopp Kevin J.

President and CEO

Executive Director
4,318 -0.6%
2.33
USD 10,064
4,318 -0.6% 2.33 USD 10,064
2024-05-13 2024-05-13 B Purchase

Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.0%
6.42
USD 64,200
10,000 +2.0% 6.42 USD 64,200
2024-05-10 2024-05-10 B Purchase

Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.0%
5.77
USD 57,700
10,000 +2.0% 5.77 USD 57,700
2024-05-09 2024-05-09 B Purchase

Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.1%
5.83
USD 58,300
10,000 +2.1% 5.83 USD 58,300
2024-05-08 2024-05-08 B Purchase

Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.1%
5.72
USD 57,200
10,000 +2.1% 5.72 USD 57,200
2024-05-07 2024-05-07 B Purchase

Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.2%
5.60
USD 56,000
10,000 +2.2% 5.60 USD 56,000
2024-05-07 2024-05-07 B Purchase

Knopp Kevin J.

President and CEO

Executive Director
10,000 +2.2%
5.60
USD 56,000
10,000 +2.2% 5.60 USD 56,000
2024-02-02 2024-02-02 PS Planned sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
9,711 -10.8%
7.09
USD 68,873
9,711 -10.8% 7.09 USD 68,873
2024-02-02 2024-02-01 S Sale

Turner Michael S.

Chief Legal & Admin Officer

Officer
3,616 -28.4%
6.97
USD 25,204
3,616 -28.4% 6.97 USD 25,204
2024-02-02 2024-02-01 S Sale

Turner Michael S.

Chief Legal & Admin Officer

Officer
1,616 -11.3%
7.03
USD 11,355
1,616 -11.3% 7.03 USD 11,355
2024-02-02 2024-02-01 S Sale

Brown Christopher D.

Chief Product Officer

Officer
2,358 -0.3%
7.02
USD 16,549
2,358 -0.3% 7.02 USD 16,549
2024-02-02 2024-02-01 S Sale

Brown Christopher D.

Chief Product Officer

Officer
1,599 -0.2%
6.99
USD 11,181
1,599 -0.2% 6.99 USD 11,181
2024-02-02 2024-02-01 S Sale

Knopp Kevin J.

President and CEO

Executive Director
4,972 -1.2%
7.02
USD 34,884
4,972 -1.2% 7.02 USD 34,884
2024-02-02 2024-02-01 S Sale

Knopp Kevin J.

President and CEO

Executive Director
4,099 -1.0%
6.97
USD 28,577
4,099 -1.0% 6.97 USD 28,577
2024-02-02 2024-02-01 S Sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
3,810 -4.1%
7.00
USD 26,682
3,810 -4.1% 7.00 USD 26,682
2024-02-02 2024-02-01 S Sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
1,888 -2.0%
7.00
USD 13,210
1,888 -2.0% 7.00 USD 13,210
2024-01-02 2023-12-28 PS Planned sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
6,000 -7.0%
12.08
USD 72,480
6,000 -7.0% 12.08 USD 72,480
2023-12-21 2023-12-21 PS Planned sale

Brown Christopher D.

Chief Product Officer

Officer
7,370 -0.8%
9.12
USD 67,214
7,370 -0.8% 9.12 USD 67,214
2023-12-21 2023-12-20 PS Planned sale

Brown Christopher D.

Chief Product Officer

Officer
5,235 -0.6%
9.10
USD 47,639
5,235 -0.6% 9.10 USD 47,639
2023-12-21 2023-12-19 PS Planned sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
5,580 -6.1%
9.08
USD 50,666
5,580 -6.1% 9.08 USD 50,666
2023-12-21 2023-12-19 PS Planned sale

Brown Christopher D.

Chief Product Officer

Officer
1,305 -0.1%
9.08
USD 11,849
1,305 -0.1% 9.08 USD 11,849
2023-12-21 2023-12-19 PS Planned sale

Brown Christopher D.

Chief Product Officer

Officer
6,090 -0.7%
9.08
USD 55,297
6,090 -0.7% 9.08 USD 55,297
2023-06-09 2023-06-07 PS Planned sale

Brown Christopher D.

Chief Product Officer

Officer
4,470 -0.5%
10.03
USD 44,834
4,470 -0.5% 10.03 USD 44,834
2023-05-25 2023-05-23 PS Planned sale

Brown Christopher D.

Chief Technology Officer

Officer
10,000 -1.1%
10.02
USD 100,200
10,000 -1.1% 10.02 USD 100,200
2023-05-25 2023-05-23 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
60,000 -14.0%
10.12
USD 607,200
60,000 -14.0% 10.12 USD 607,200
2023-02-17 2023-02-16 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
4,842 -1.1%
10.12
USD 49,001
4,842 -1.1% 10.12 USD 49,001
2023-02-17 2023-02-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
15,158 -3.4%
10.29
USD 155,976
15,158 -3.4% 10.29 USD 155,976
2023-02-03 2023-02-02 PS Planned sale

Turner Michael S.

VP, General Counsel

Officer
2,848 -100.0%
10.02
USD 28,537
2,848 -100.0% 10.02 USD 28,537
2023-02-03 2023-02-02 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
40,000 -8.2%
10.51
USD 420,400
40,000 -8.2% 10.51 USD 420,400
2023-02-03 2023-02-02 PS Planned sale

Brown Christopher D.

Chief Technology Officer

Officer
10,000 -1.1%
10.03
USD 100,300
10,000 -1.1% 10.03 USD 100,300
2023-02-03 2023-02-02 PS Planned sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
3,266 -3.4%
10.03
USD 32,758
3,266 -3.4% 10.03 USD 32,758
2023-02-03 2023-02-01 S Sale

Turner Michael S.

VP, General Counsel

Officer
1,579 -35.7%
9.17
USD 14,479
1,579 -35.7% 9.17 USD 14,479
2023-02-03 2023-02-01 S Sale

Fitzpatrick Maura

VP, Product Management & Mktg

Officer
1,593 -36.0%
9.20
USD 14,656
1,593 -36.0% 9.20 USD 14,656
2023-02-03 2023-02-01 S Sale

Knopp Kevin J.

President and CEO

Executive Director
4,049 -0.8%
9.36
USD 37,899
4,049 -0.8% 9.36 USD 37,899
2023-02-03 2023-02-01 S Sale

Brown Christopher D.

Chief Technology Officer

Officer
1,564 -0.2%
9.17
USD 14,342
1,564 -0.2% 9.17 USD 14,342
2023-02-03 2023-02-01 S Sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
1,836 -1.9%
9.17
USD 16,836
1,836 -1.9% 9.17 USD 16,836
2022-11-23 2022-11-22 B Purchase

Spoto Mark

Non-Executive Director
2,585 +6.8%
9.65
USD 24,945
2,585 +6.8% 9.65 USD 24,945
2022-11-17 2022-11-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
1,013 -0.2%
12.40
USD 12,561
1,013 -0.2% 12.40 USD 12,561
2022-11-17 2022-11-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
6,619 -1.4%
11.76
USD 77,839
6,619 -1.4% 11.76 USD 77,839
2022-11-17 2022-11-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
12,368 -2.5%
10.54
USD 130,359
12,368 -2.5% 10.54 USD 130,359
2022-10-19 2022-10-18 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
18,800 -3.6%
15.32
USD 288,016
18,800 -3.6% 15.32 USD 288,016
2022-10-19 2022-10-17 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
11,200 -2.1%
14.68
USD 164,416
11,200 -2.1% 14.68 USD 164,416
2022-09-19 2022-09-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
30,000 -5.4%
16.94
USD 508,200
30,000 -5.4% 16.94 USD 508,200
2022-09-14 2022-09-12 PS Planned sale

Brown Christopher D.

Chief Technology Officer

Officer
20,000 -2.2%
19.58
USD 391,600
20,000 -2.2% 19.58 USD 391,600
2022-08-18 2022-08-17 PS Planned sale

Turner Michael S.

VP, General Counsel

Officer
5,000 -100.0%
18.15
USD 90,750
5,000 -100.0% 18.15 USD 90,750
2022-08-17 2022-08-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
2,373 -0.4%
19.72
USD 46,796
2,373 -0.4% 19.72 USD 46,796
2022-08-17 2022-08-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
27,627 -4.7%
19.23
USD 531,267
27,627 -4.7% 19.23 USD 531,267
2022-08-09 2022-08-08 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
286 -0.0%
25.17
USD 7,199
286 -0.0% 25.17 USD 7,199
2022-08-09 2022-08-05 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
25,910 -4.2%
25.32
USD 656,041
25,910 -4.2% 25.32 USD 656,041
2022-08-05 2022-08-04 PS Planned sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
12,733 -12.2%
24.39
USD 310,558
12,733 -12.2% 24.39 USD 310,558
2022-08-05 2022-08-03 PS Planned sale

Griffith Joseph H. IV

Chief Financial Officer

Officer
600 -0.7%
24.29
USD 14,574
600 -0.7% 24.29 USD 14,574
2022-08-03 2022-08-02 PS Planned sale

Turner Michael S.

VP, General Counsel

Officer
10,000 -100.0%
23.96
USD 239,600
10,000 -100.0% 23.96 USD 239,600
2022-08-01 2022-08-01 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
14,647 -2.3%
22.46
USD 328,972
14,647 -2.3% 22.46 USD 328,972
2022-08-01 2022-07-29 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
18,000 -2.8%
22.22
USD 399,960
18,000 -2.8% 22.22 USD 399,960
2022-08-01 2022-07-28 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
5,700 -0.9%
22.01
USD 125,457
5,700 -0.9% 22.01 USD 125,457
2022-07-25 2022-07-21 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
200 -0.0%
22.04
USD 4,408
200 -0.0% 22.04 USD 4,408
2022-07-19 2022-07-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
18,231 -2.7%
17.74
USD 323,418
18,231 -2.7% 17.74 USD 323,418
2022-07-19 2022-07-15 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
11,769 -1.7%
16.80
USD 197,719
11,769 -1.7% 16.80 USD 197,719
2022-07-08 2022-07-08 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
453 -0.1%
22.06
USD 9,993
453 -0.1% 22.06 USD 9,993
2022-07-08 2022-07-06 PS Planned sale

Knopp Kevin J.

President and CEO

Executive Director
1,000 -0.1%
22.07
USD 22,070
1,000 -0.1% 22.07 USD 22,070
2022-07-08 2022-07-06 PS Planned sale

Brown Christopher D.

Chief Technology Officer

Officer
3,200 -0.3%
21.78
USD 69,696
3,200 -0.3% 21.78 USD 69,696
2022-07-08 2022-07-06 PS Planned sale

Brown Christopher D.

Chief Technology Officer

Officer
6,800 -0.7%
21.04
USD 143,072
6,800 -0.7% 21.04 USD 143,072
2022-07-01 2022-06-30 PS Planned sale

Brown Christopher D.

Chief Technology Officer

Officer
3,700 -0.4%
20.12
USD 74,444
3,700 -0.4% 20.12 USD 74,444
2022-07-01 2022-06-29 PS Planned sale

Brown Christopher D.

Chief Technology Officer

Officer
16,471 -1.7%
20.22
USD 333,044
16,471 -1.7% 20.22 USD 333,044
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