Stock chart
Ticker: SESN Exchange: NMS


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale
Past 90 days
 
Value bought
 
Value sold
 
Net insiders buying
 
Trades (buy and sell)
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 Total value Details
2023-03-06 2023-03-02 S Sale

Cannell Thomas R

President and CEO

Executive Director
278,564 -29.3%
0.59
163,517 USD
278,564 -29.3% 0.59 163,517 USD
2023-03-06 2023-03-02 S Sale

Cannell Thomas R

President and CEO

Executive Director
208,923 -37.8%
0.59
122,638 USD
208,923 -37.8% 0.59 122,638 USD
2023-03-06 2023-03-02 S Sale

Sullivan Mark

General Counsel & Secretary

Officer
44,879 -10.6%
0.59
26,344 USD
44,879 -10.6% 0.59 26,344 USD
2023-03-06 2023-03-02 S Sale

Sullivan Mark

General Counsel & Secretary

Officer
73,361 -19.1%
0.59
43,063 USD
73,361 -19.1% 0.59 43,063 USD
2023-03-06 2023-03-02 S Sale

Sullivan Mark

General Counsel & Secretary

Officer
100,978 -33.7%
0.59
59,274 USD
100,978 -33.7% 0.59 59,274 USD
2023-03-06 2023-03-02 S Sale

Forbes Monica

Chief Financial Officer

Officer
98,304 -16.3%
0.59
57,704 USD
98,304 -16.3% 0.59 57,704 USD
2023-03-06 2023-03-02 S Sale

Forbes Monica

Chief Financial Officer

Officer
93,279 -18.1%
0.59
54,755 USD
93,279 -18.1% 0.59 54,755 USD
2023-03-06 2023-03-02 S Sale

Forbes Monica

Chief Financial Officer

Officer
154,266 -32.1%
0.59
90,554 USD
154,266 -32.1% 0.59 90,554 USD
2023-03-06 2023-03-02 S Sale

Ryu Elly

Principal Accounting Officer

Officer
17,289 -10.4%
0.59
10,149 USD
17,289 -10.4% 0.59 10,149 USD
2023-03-06 2023-03-02 S Sale

MacDonald Glen C

Chief Technology Officer

Officer
33,888 -7.8%
0.59
19,892 USD
33,888 -7.8% 0.59 19,892 USD
2023-03-06 2023-03-02 S Sale

MacDonald Glen C

Chief Technology Officer

Officer
60,237 -15.4%
0.59
35,359 USD
60,237 -15.4% 0.59 35,359 USD
2023-03-06 2023-03-02 S Sale

MacDonald Glen C

Chief Technology Officer

Officer
76,247 -26.9%
0.59
44,757 USD
76,247 -26.9% 0.59 44,757 USD
2023-02-23 2023-02-21 S Sale

Cannell Thomas R

President and CEO

Executive Director
53,727 -8.9%
0.59
31,554 USD
53,727 -8.9% 0.59 31,554 USD
2023-02-23 2023-02-21 S Sale

MacDonald Glen C

Chief Technology Officer

Officer
25,927 -8.4%
0.59
15,227 USD
25,927 -8.4% 0.59 15,227 USD
2023-02-23 2023-02-21 S Sale

Sullivan Mark

General Counsel & Secretary

Officer
39,831 -11.7%
0.59
23,393 USD
39,831 -11.7% 0.59 23,393 USD
2023-02-23 2023-02-21 S Sale

Forbes Monica

Chief Financial Officer

Officer
61,862 -11.4%
0.59
36,332 USD
61,862 -11.4% 0.59 36,332 USD
2023-02-23 2023-02-21 S Sale

Ryu Elly

Principal Accounting Officer

Officer
7,159 -4.1%
0.59
4,204 USD
7,159 -4.1% 0.59 4,204 USD
2016-09-26 2016-09-23 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
10,293 -8.8%
3.10
31,908 USD
10,293 -8.8% 3.10 31,908 USD
2016-09-26 2016-09-23 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
41,178 -8.8%
3.10
127,652 USD
41,178 -8.8% 3.10 127,652 USD
2016-09-26 2016-09-23 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
3,118 -2.6%
3.16
9,853 USD
3,118 -2.6% 3.16 9,853 USD
2016-09-26 2016-09-23 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
12,482 -2.6%
3.16
39,443 USD
12,482 -2.6% 3.16 39,443 USD
2016-09-26 2016-09-22 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
47,090 -28.1%
3.17
149,275 USD
47,090 -28.1% 3.17 149,275 USD
2016-09-26 2016-09-22 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
188,367 -28.2%
3.17
597,123 USD
188,367 -28.2% 3.17 597,123 USD
2016-09-26 2016-09-22 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
28,163 -14.4%
3.18
89,558 USD
28,163 -14.4% 3.18 89,558 USD
2016-09-26 2016-09-22 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
112,731 -14.4%
3.18
358,485 USD
112,731 -14.4% 3.18 358,485 USD
2016-09-21 2016-09-21 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
64,509 -24.8%
3.75
241,909 USD
64,509 -24.8% 3.75 241,909 USD
2016-09-21 2016-09-21 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
258,214 -24.8%
3.75
968,303 USD
258,214 -24.8% 3.75 968,303 USD
2016-09-21 2016-09-20 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
10,778 -4.0%
3.39
36,537 USD
10,778 -4.0% 3.39 36,537 USD
2016-09-21 2016-09-20 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
43,139 -4.0%
3.39
146,241 USD
43,139 -4.0% 3.39 146,241 USD
2016-09-21 2016-09-19 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
1,939 -0.7%
3.31
6,418 USD
1,939 -0.7% 3.31 6,418 USD
2016-09-21 2016-09-19 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
7,761 -0.7%
3.31
25,689 USD
7,761 -0.7% 3.31 25,689 USD
2016-09-16 2016-09-15 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
536 -0.2%
4.16
2,230 USD
536 -0.2% 4.16 2,230 USD
2016-09-16 2016-09-15 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
2,145 -0.2%
4.16
8,923 USD
2,145 -0.2% 4.16 8,923 USD
2016-09-16 2016-09-14 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
8,802 -3.1%
4.18
36,792 USD
8,802 -3.1% 4.18 36,792 USD
2016-09-16 2016-09-14 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
35,209 -3.1%
4.18
147,174 USD
35,209 -3.1% 4.18 147,174 USD
2016-09-08 2016-09-07 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
8,145 -2.8%
4.51
36,734 USD
8,145 -2.8% 4.51 36,734 USD
2016-09-08 2016-09-07 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
32,597 -2.8%
4.51
147,012 USD
32,597 -2.8% 4.51 147,012 USD
2016-09-08 2016-09-07 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
52,985 -2.8%
4.51
238,962 USD
52,985 -2.8% 4.51 238,962 USD
2016-09-08 2016-09-06 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
3,108 -1.1%
4.63
14,390 USD
3,108 -1.1% 4.63 14,390 USD
2016-09-08 2016-09-06 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
12,441 -1.1%
4.63
57,602 USD
12,441 -1.1% 4.63 57,602 USD
2016-09-08 2016-09-06 S Sale

Flagship Ventures Fund IV, L.P.

Major owner
20,221 -1.1%
4.63
93,623 USD
20,221 -1.1% 4.63 93,623 USD
2016-06-14 2016-06-13 S Sale

Boxer Capital, LLC

Major owner
177,140 -37.3%
2.74
486,090 USD
177,140 -37.3% 2.74 486,090 USD
2016-06-14 2016-06-13 S Sale

Boxer Capital, LLC

Major owner
864,860 -38.3%
2.74
2,373,262 USD
864,860 -38.3% 2.74 2,373,262 USD
2015-05-11 2015-05-08 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
33,400 -1.7%
13.23
441,882 USD
33,400 -1.7% 13.23 441,882 USD
2015-02-03 2015-02-02 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
17,900 -0.9%
11.62
207,998 USD
17,900 -0.9% 11.62 207,998 USD
2015-01-30 2015-01-30 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
60,000 -2.9%
11.77
706,200 USD
60,000 -2.9% 11.77 706,200 USD
2015-01-30 2015-01-29 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
55,000 -2.6%
11.46
630,300 USD
55,000 -2.6% 11.46 630,300 USD
2015-01-30 2015-01-28 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
5,000 -0.2%
11.58
57,900 USD
5,000 -0.2% 11.58 57,900 USD
2015-02-09 2015-01-27 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
2,200 -0.1%
11.66
25,652 USD
2,200 -0.1% 11.66 25,652 USD
2015-01-26 2015-01-26 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.87
1,187 USD
100 -0.0% 11.87 1,187 USD
2015-01-26 2015-01-26 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.82
1,182 USD
100 -0.0% 11.82 1,182 USD
2015-01-26 2015-01-26 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
6 -0.0%
11.81
71 USD
6 -0.0% 11.81 71 USD
2015-01-26 2015-01-26 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
494 -0.0%
11.88
5,869 USD
494 -0.0% 11.88 5,869 USD
2015-01-26 2015-01-26 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.77
1,177 USD
100 -0.0% 11.77 1,177 USD
2015-01-26 2015-01-26 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.68
1,168 USD
100 -0.0% 11.68 1,168 USD
2015-01-26 2015-01-26 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
200 -0.0%
11.53
2,306 USD
200 -0.0% 11.53 2,306 USD
2015-01-26 2015-01-26 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
200 -0.0%
11.50
2,300 USD
200 -0.0% 11.50 2,300 USD
2015-01-26 2015-01-23 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
3,664 -0.2%
11.90
43,602 USD
3,664 -0.2% 11.90 43,602 USD
2015-01-26 2015-01-23 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
300 -0.0%
11.89
3,567 USD
300 -0.0% 11.89 3,567 USD
2015-01-26 2015-01-23 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.88
1,188 USD
100 -0.0% 11.88 1,188 USD
2015-01-26 2015-01-23 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
536 -0.0%
11.87
6,362 USD
536 -0.0% 11.87 6,362 USD
2015-01-26 2015-01-23 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.86
1,186 USD
100 -0.0% 11.86 1,186 USD
2015-01-26 2015-01-23 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.76
1,176 USD
100 -0.0% 11.76 1,176 USD
2015-01-26 2015-01-23 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.70
1,170 USD
100 -0.0% 11.70 1,170 USD
2015-01-26 2015-01-23 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.57
1,157 USD
100 -0.0% 11.57 1,157 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
1,017 -0.0%
11.99
12,194 USD
1,017 -0.0% 11.99 12,194 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.98
1,198 USD
100 -0.0% 11.98 1,198 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.94
1,194 USD
100 -0.0% 11.94 1,194 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.94
1,194 USD
100 -0.0% 11.94 1,194 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
83 -0.0%
11.90
988 USD
83 -0.0% 11.90 988 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
300 -0.0%
11.89
3,567 USD
300 -0.0% 11.89 3,567 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
2,600 -0.1%
11.88
30,888 USD
2,600 -0.1% 11.88 30,888 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.88
1,188 USD
100 -0.0% 11.88 1,188 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.87
1,187 USD
100 -0.0% 11.87 1,187 USD
2015-01-23 2015-01-22 S Sale

JAFCO Super V3 Investment Limited Partnership

Major owner
100 -0.0%
11.86
1,186 USD
100 -0.0% 11.86 1,186 USD