Insider Trading for PTA
View recent insider trading activity including purchases, sales, and awards. Insider trading can provide insights into how executives view their company's prospects.
Insider Trading Summary
Shares Acquired
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Shares Disposed
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Net Position
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Recent Activity (30 Days)
No insider transactions in the past 30 days.
Quarterly Activity (3 Months)
No insider transactions in the past 3 months.
Key Insider Activity: Jun 1, 2005 to Dec 9, 2025
WHITEBOX ADVISORS LLC
Other10 Percent Owner
-1.2M shares
41 transactions
Zaharis-Nikas Elaine
OtherUnknown
+15.1K shares
12 transactions
Richards Daphne L
OtherUnknown
+4.0K shares
5 transactions
SCAPELL WILLIAM F
ExecutivePresident
+3.0K shares
2 transactions
Dorost Jerry
ExecutivePresident
+2.0K shares
2 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Dec 9, 2025 | Hilal Nargis | Unknown | Unknown | 0 | $0.00 | $0.00 | 0 | View |
| Oct 31, 2025 | Zaharis-Nikas Elaine | Unknown | Unknown | 0 | $0.00 | $0.00 | 0 | View |
| Oct 31, 2025 | Kastoff Robert | Unknown | Unknown | 0 | $0.00 | $0.00 | 0 | View |
Oct 31, 2024 | Locked | — | — | — | — | — | — | — |
Oct 31, 2024 | Locked | — | — | — | — | — | — | — |
Jan 31, 2024 | Locked | — | — | — | — | — | — | — |
Jan 31, 2024 | Locked | — | — | — | — | — | — | — |
Oct 31, 2023 | Locked | — | — | — | — | — | — | — |
Oct 31, 2023 | Locked | — | — | — | — | — | — | — |
Oct 31, 2023 | Locked | — | — | — | — | — | — | — |
Oct 31, 2023 | Locked | — | — | — | — | — | — | — |
Oct 11, 2023 | Locked | — | — | — | — | — | — | — |
Jul 6, 2023 | Locked | — | — | — | — | — | — | — |
Dec 28, 2022 | Locked | — | — | — | — | — | — | — |
Dec 23, 2022 | Locked | — | — | — | — | — | — | — |
Oct 31, 2022 | Locked | — | — | — | — | — | — | — |
Oct 31, 2022 | Locked | — | — | — | — | — | — | — |
Feb 17, 2022 | Locked | — | — | — | — | — | — | — |
Feb 14, 2022 | Locked | — | — | — | — | — | — | — |
Dec 17, 2021 | Locked | — | — | — | — | — | — | — |
Dec 7, 2021 | Locked | — | — | — | — | — | — | — |
Oct 31, 2021 | Locked | — | — | — | — | — | — | — |
Oct 31, 2021 | Locked | — | — | — | — | — | — | — |
Oct 31, 2021 | Locked | — | — | — | — | — | — | — |
Aug 17, 2021 | Locked | — | — | — | — | — | — | — |
Apr 6, 2021 | Locked | — | — | — | — | — | — | — |
Apr 1, 2021 | Locked | — | — | — | — | — | — | — |
Mar 8, 2021 | Locked | — | — | — | — | — | — | — |
Mar 5, 2021 | Locked | — | — | — | — | — | — | — |
Feb 3, 2021 | Locked | — | — | — | — | — | — | — |
Feb 3, 2021 | Locked | — | — | — | — | — | — | — |
Feb 2, 2021 | Locked | — | — | — | — | — | — | — |
Feb 1, 2021 | Locked | — | — | — | — | — | — | — |
Dec 16, 2020 | Locked | — | — | — | — | — | — | — |
Dec 15, 2020 | Locked | — | — | — | — | — | — | — |
Dec 8, 2020 | Locked | — | — | — | — | — | — | — |
Nov 10, 2020 | Locked | — | — | — | — | — | — | — |
Oct 30, 2020 | Locked | — | — | — | — | — | — | — |
Oct 30, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Oct 27, 2020 | Locked | — | — | — | — | — | — | — |
Aug 31, 2005 | Locked | — | — | — | — | — | — | — |
Aug 3, 2005 | Locked | — | — | — | — | — | — | — |
Aug 3, 2005 | Locked | — | — | — | — | — | — | — |
Aug 3, 2005 | Locked | — | — | — | — | — | — | — |
Aug 3, 2005 | Locked | — | — | — | — | — | — | — |
Aug 3, 2005 | Locked | — | — | — | — | — | — | — |
Aug 3, 2005 | Locked | — | — | — | — | — | — | — |
Jul 28, 2005 | Locked | — | — | — | — | — | — | — |
Jul 27, 2005 | Locked | — | — | — | — | — | — | — |
Jul 25, 2005 | Locked | — | — | — | — | — | — | — |
Jul 14, 2005 | Locked | — | — | — | — | — | — | — |
Jul 14, 2005 | Locked | — | — | — | — | — | — | — |
Jul 14, 2005 | Locked | — | — | — | — | — | — | — |
Jul 14, 2005 | Locked | — | — | — | — | — | — | — |
Jul 13, 2005 | Locked | — | — | — | — | — | — | — |
Jul 13, 2005 | Locked | — | — | — | — | — | — | — |
Jul 13, 2005 | Locked | — | — | — | — | — | — | — |
Jul 12, 2005 | Locked | — | — | — | — | — | — | — |
Jul 11, 2005 | Locked | — | — | — | — | — | — | — |
Jul 7, 2005 | Locked | — | — | — | — | — | — | — |
Jul 6, 2005 | Locked | — | — | — | — | — | — | — |
Jun 30, 2005 | Locked | — | — | — | — | — | — | — |
Jun 24, 2005 | Locked | — | — | — | — | — | — | — |
Jun 22, 2005 | Locked | — | — | — | — | — | — | — |
Jun 17, 2005 | Locked | — | — | — | — | — | — | — |
Jun 15, 2005 | Locked | — | — | — | — | — | — | — |
Jun 14, 2005 | Locked | — | — | — | — | — | — | — |
Jun 10, 2005 | Locked | — | — | — | — | — | — | — |
Jun 9, 2005 | Locked | — | — | — | — | — | — | — |
Jun 8, 2005 | Locked | — | — | — | — | — | — | — |
Jun 7, 2005 | Locked | — | — | — | — | — | — | — |
Jun 7, 2005 | Locked | — | — | — | — | — | — | — |
Jun 7, 2005 | Locked | — | — | — | — | — | — | — |
Jun 7, 2005 | Locked | — | — | — | — | — | — | — |
Jun 7, 2005 | Locked | — | — | — | — | — | — | — |
Jun 7, 2005 | Locked | — | — | — | — | — | — | — |
Jun 7, 2005 | Locked | — | — | — | — | — | — | — |
Jun 6, 2005 | Locked | — | — | — | — | — | — | — |
Jun 3, 2005 | Locked | — | — | — | — | — | — | — |
Jun 2, 2005 | Locked | — | — | — | — | — | — | — |
Jun 1, 2005 | Locked | — | — | — | — | — | — | — |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net buyers of PTA stock, which is typically a strong positive signal.