Stock chart
Ticker: PIRS Exchange: NAS


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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
2025-04-10 2025-04-09 B Purchase

JENKINS GEORGE M

Non-Executive Director
1,000 +22.6%
20.27
USD 50,472
1,000 +22.6% 20.27 USD 100,000
2025-04-10 2025-04-09 B Purchase

JENKINS GEORGE M

Non-Executive Director
1,000 +1.4%
20.13
USD 50,325
1,000 +1.4% 20.13 USD 100,000
2024-12-19 2024-12-18 B Purchase

JENKINS GEORGE M

Non-Executive Director
4,000 +2.3%
12.93
USD 51,720
4,000 +2.3% 12.93 USD 51,720
2024-08-12 2024-08-12 B Purchase

ADAR1 Capital Management, LLC

Large shareholder
757 +5.3%
15.88
USD 12,023
757 +5.3% 15.88 USD 12,023
2024-08-12 2024-08-12 B Purchase

ADAR1 Capital Management, LLC

Large shareholder
2,243 +1.8%
15.88
USD 35,624
2,243 +1.8% 15.88 USD 35,624
2024-08-12 2024-08-09 B Purchase

ADAR1 Capital Management, LLC

Large shareholder
3,000 +2.4%
14.89
USD 44,679
3,000 +2.4% 14.89 USD 44,679
2023-05-30 2023-05-25 B Purchase

KIRITSY CHRISTOPHER P

Non-Executive Director
10,000 +100.0%
0.85
USD 8,500
10,000 +100.0% 0.85 USD 8,500
2022-05-16 2022-05-13 B Purchase

Demuth Tim

Chief Medical Officer

Officer
6,000 +inf%
1.71
USD 10,260
6,000 +inf% 1.71 USD 10,260
2021-09-01 2021-08-30 S Sale

Olwill Shane

Chief Development Officer

Officer
29,200 -86.3%
5.15
USD 150,380
29,200 -86.3% 5.15 USD 150,380
2021-09-01 2021-08-30 S Sale

Olwill Shane

Chief Development Officer

Officer
9,200 -21.4%
5.00
USD 46,000
9,200 -21.4% 5.00 USD 46,000
2020-07-22 2020-07-21 S Sale

Aquilo Capital Management, LLC

Large shareholder
1,900,000 -34.1%
2.95
USD 5,605,000
1,900,000 -34.1% 2.95 USD 5,605,000
2019-09-10 2019-09-06 S Sale

BVF PARTNERS L P/IL

Large shareholder
1,128 -0.4%
4.50
USD 5,075
1,128 -0.4% 4.50 USD 5,075
2019-09-10 2019-09-06 S Sale

BVF PARTNERS L P/IL

Large shareholder
25,720 -1.1%
4.50
USD 115,725
25,720 -1.1% 4.50 USD 115,725
2019-09-10 2019-09-06 S Sale

BVF PARTNERS L P/IL

Large shareholder
23,152 -1.0%
4.50
USD 104,170
23,152 -1.0% 4.50 USD 104,170
2018-09-17 2018-09-14 B Purchase

KIRITSY CHRISTOPHER P

5,000 +100.0%
5.11
USD 25,525
5,000 +100.0% 5.11 USD 25,525
2018-05-16 2018-05-15 B Purchase

GERAGHTY JAMES A

10,000 +100.0%
5.75
USD 57,500
10,000 +100.0% 5.75 USD 57,500
2018-05-02 2018-04-30 S Sale

ORBIMED ADVISORS LLC

Large shareholder
10,400 -21.1%
6.35
USD 66,040
10,400 -21.1% 6.35 USD 66,040
2018-05-02 2018-04-30 S Sale

ORBIMED ADVISORS LLC

Large shareholder
989,600 -18.0%
6.35
USD 6,283,960
989,600 -18.0% 6.35 USD 6,283,960
2018-02-15 2018-02-13 S Sale

ORBIMED ADVISORS LLC

Large shareholder
75 -0.2%
8.98
USD 674
75 -0.2% 8.98 USD 674
2018-02-15 2018-02-13 S Sale

ORBIMED ADVISORS LLC

Large shareholder
7,822 -0.1%
8.98
USD 70,242
7,822 -0.1% 8.98 USD 70,242
2018-01-04 2018-01-03 S Sale

ORBIMED ADVISORS LLC

Large shareholder
16,128 -24.7%
7.35
USD 118,541
16,128 -24.7% 7.35 USD 118,541
2018-01-04 2018-01-03 S Sale

ORBIMED ADVISORS LLC

Large shareholder
1,693,492 -23.5%
7.35
USD 12,447,166
1,693,492 -23.5% 7.35 USD 12,447,166
2017-12-20 2017-12-18 S Sale

ORBIMED ADVISORS LLC

Large shareholder
1,392 -2.1%
5.70
USD 7,934
1,392 -2.1% 5.70 USD 7,934
2017-12-20 2017-12-18 S Sale

ORBIMED ADVISORS LLC

Large shareholder
146,243 -2.0%
5.70
USD 833,585
146,243 -2.0% 5.70 USD 833,585
2017-08-17 2017-08-17 B Purchase

GERAGHTY JAMES A

10,000 +inf%
4.82
USD 48,200
10,000 +inf% 4.82 USD 48,200
2017-08-17 2017-08-17 B Purchase

Reine Allan

See Remarks

20,000 +44.4%
4.89
USD 97,800
20,000 +44.4% 4.89 USD 97,800
2017-08-17 2017-08-16 B Purchase

Reine Allan

See Remarks

45,000 +inf%
4.79
USD 215,550
45,000 +inf% 4.79 USD 215,550
2016-06-15 2016-06-14 B Purchase

Matis Louis

SVP, Chief Development Officer

Officer
7,915 +379.6%
1.71
USD 13,535
7,915 +379.6% 1.71 USD 13,535
2016-06-15 2016-06-13 B Purchase

Matis Louis

SVP, Chief Development Officer

Officer
2,085 +inf%
1.68
USD 3,503
2,085 +inf% 1.68 USD 3,503
2016-06-15 2016-06-13 B Purchase

Yoder Stephen S.

President and CEO

Executive Director
6,000 +inf%
1.68
USD 10,080
6,000 +inf% 1.68 USD 10,080
2016-06-15 2016-06-13 B Purchase

DEPTULA-HICKS DARLENE M

SVP, Chief Financial Officer

Officer
5,000 +inf%
1.66
USD 8,300
5,000 +inf% 1.66 USD 8,300
2015-07-08 2015-07-06 B Purchase

ORBIMED ADVISORS LLC

Non-Executive Director Large shareholder
4,717 +7.8%
2.75
USD 12,972
4,717 +7.8% 2.75 USD 12,972
2015-07-08 2015-07-06 B Purchase

Khuong Chau Quang

Non-Executive Director Large shareholder
4,717 +7.8%
2.75
USD 12,972
4,717 +7.8% 2.75 USD 12,972
2015-07-08 2015-07-06 B Purchase

ORBIMED ADVISORS LLC

Non-Executive Director Large shareholder
495,283 +7.4%
2.75
USD 1,362,028
495,283 +7.4% 2.75 USD 1,362,028
2015-07-08 2015-07-06 B Purchase

Khuong Chau Quang

Non-Executive Director Large shareholder
495,283 +7.4%
2.75
USD 1,362,028
495,283 +7.4% 2.75 USD 1,362,028
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