David Tierney

Insider profile

Currently holds a position at Zevra Therapeutics Inc

Performance

Overall performance
2.9
Performance over holding periods
2.9
30 days 90 days 120 days
Average return 2% 8.2% 15.1%
Success rate 52% 68% 82%
Transactions
16 56% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance

Positions

Position Company Period
Independent Director Zevra Therapeutics Inc March 1, 2015 -
David Tierney's trades of Catalyst Pharmaceuticals Inc's stock


• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Transaction date
Proposed sale
Price
421.76
Quantity 50,822
Value US$3,919,379
Transaction date
Proposed sale
Price
20.10
Quantity 15,000
Value US$301,450
Transaction date
Proposed sale
Price
15.67
Quantity 25,000
Value US$391,824
Transaction date
Proposed sale
Price
13.33
Quantity 50,000
Value US$666,268
Transaction date
Purchase
Price
4.15
Quantity 5,000 +85.7%
Value US$20,732
Transaction date
Purchase
Price
4.39
Quantity 2,000 +52.2%
Value US$8,780
Transaction date
Purchase
Price
7.79
Quantity 2,000 +109.0%
Value US$15,578
Transaction date
Purchase
Price
0.67
Quantity 1,000 +3.5%
Value US$665
Transaction date
Purchase
Price
0.66
Quantity 4,500 +18.9%
Value US$2,970
Transaction date
Purchase
Price
0.65
Quantity 2,000 +9.1%
Value US$1,290
Transaction date
Purchase
Price
0.64
Quantity 2,500 +12.9%
Value US$1,607
Transaction date
Purchase
Price
4.20
Quantity 1,000 +20.0%
Value US$4,200
Transaction date
Purchase
Price
11.00
Quantity 5,000 New position
Value US$55,000
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2025-08-28 2025-08-27
S Sale
20,946 -13.9%
332.11
US$1,968,482 		20,946 -13.9% 332.11 US$1,968,482
2025-08-27 2025-08-27
PrS Proposed sale
50,822
421.76
US$3,919,379 		50,822 421.76 US$3,919,379
2024-08-23 2024-08-21
S Sale
33,110 -26.0%
249.13
US$1,692,775 		33,110 -26.0% 249.13 US$1,692,775
2024-08-21 2024-08-21
PrS Proposed sale
15,000
20.10
US$301,450 		15,000 20.10 US$301,450
2024-04-10 2024-04-08
S Sale
25,000 -6.7%
15.68
US$392,000 		25,000 -6.7% 15.68 US$392,000
2024-04-08 2024-04-08
PrS Proposed sale
25,000
15.67
US$391,824 		25,000 15.67 US$391,824
2023-12-14 2023-12-12
S Sale
50,000 -13.0%
13.33
US$666,250 		50,000 -13.0% 13.33 US$666,250
2023-12-12 2023-12-12
PrS Proposed sale
50,000
13.33
US$666,268 		50,000 13.33 US$666,268
2023-04-07 2023-04-05
S Sale
30,000 -8.7%
16.83
US$504,900 		30,000 -8.7% 16.83 US$504,900
2023-03-13 2023-03-09
B Purchase
5,000 +85.7%
4.15
US$20,732 		5,000 +85.7% 4.15 US$20,732
2022-08-23 2022-08-22
S Sale
20,000 -6.1%
14.16
US$283,180 		20,000 -6.1% 14.16 US$283,180
2022-05-26 2022-05-25
B Purchase
2,000 +52.2%
4.39
US$8,780 		2,000 +52.2% 4.39 US$8,780
2022-05-24 2022-05-20
S Sale
20,000
0.00
US$0 		20,000 0.00 US$0
2021-11-30 2021-11-30
B Purchase
2,000 +109.0%
7.79
US$15,578 		2,000 +109.0% 7.79 US$15,578
2021-08-17 2021-08-13
S Sale
50,000 -14.0%
6.08
US$303,895 		50,000 -14.0% 6.08 US$303,895
2020-08-18 2020-08-18
B Purchase
1,000 +3.5%
0.67
US$665 		1,000 +3.5% 0.67 US$665
2020-08-18 2020-08-18
B Purchase
4,500 +18.9%
0.66
US$2,970 		4,500 +18.9% 0.66 US$2,970
2020-08-18 2020-08-18
B Purchase
2,000 +9.1%
0.65
US$1,290 		2,000 +9.1% 0.65 US$1,290
2020-08-18 2020-08-18
B Purchase
2,500 +12.9%
0.64
US$1,607 		2,500 +12.9% 0.64 US$1,607
2017-03-21 2017-03-20
B Purchase
1,000 +20.0%
4.20
US$4,200 		1,000 +20.0% 4.20 US$4,200
2015-05-12 2015-04-21
B Purchase
5,000 New position
11.00
US$55,000 		5,000 New position 11.00 US$55,000