Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>

Common stock purchase or sale:
Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
2025-03-28 Purchase | 2025-03-31 09:30 am | POTBELLY CORP | PBPB | Nierenberg David Nierenberg Investment Management Company Inc. 10% Owner | 22,169 | $9.36 | $207,502 | 3,109,471 (Indirect Direct) | View |
2025-01-07 Purchase | 2025-01-10 7:45 pm | POTBELLY CORP | PBPB | Nierenberg David Nierenberg Investment Management Company Inc. 10% Owner | 7,600 | $9.2301 | $70,149 | 3,087,302 (Indirect Direct) | View |
2024-12-18 Purchase | 2024-12-20 4:37 pm | POTBELLY CORP | PBPB | Nierenberg David Nierenberg Investment Management Company Inc. 10% Owner | 4,740 | $9.3601 | $44,367 | 3,150 (Indirect) | View |
2024-08-05 Purchase | 2024-08-07 6:39 pm | POTBELLY CORP | PBPB | Nierenberg Investment Management Company Inc. Nierenberg David 10% Owner | 74,345 | $6.5317 | $485,600 | 105,469 (Indirect) | View |
2023-12-14 Purchase | 2023-12-15 09:31 am | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 19,481 | $3.72 | $72,469 | 117,836 (Indirect Direct) | View |
2023-12-11 Purchase | 2023-12-13 4:29 pm | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 54,859 | $3.4486 | $189,189 | 117,088 (Indirect Direct) | View |
2023-06-07 Sale | 2023-06-09 12:58 pm | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 750,000 | $0.625 | $468,750 | 2,862,431 (Indirect Direct) | View |
2021-06-15 Sale | 2021-06-21 3:30 pm | Houston Wire & Cable CO | HWCC | Nierenberg David Nierenberg Investment Management Company Inc. Director 10% Owner | 2,043,358 | $0 | $0 | 0 (Indirect) | View |
2020-11-30 Purchase | 2020-12-02 6:25 pm | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 49,231 | $2.05 | $100,924 | 152,569 (Indirect) | View |
2020-11-23 Purchase | 2020-11-25 4:09 pm | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 149,560 | $1.99 | $297,624 | 150,691 (Indirect) | View |
2020-10-15 Sale | 2020-10-16 5:10 pm | ROSETTA STONE INC | RST | Nierenberg David Director | 514,493 | $30 | $15,434,790 | 0 (Indirect Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
Ownership | 2024-08-07 6:37 pm | N/A N/A | POTBELLY CORP | PBPB | Nierenberg Investment Management Company Inc. Nierenberg David 10% Owner | 0 | $0 | 3,000,617 (Indirect) | View |
2023-07-01 Option Award | 2023-07-05 9:32 pm | N/A N/A | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 241,096 | $0 | 7,459,337 (Direct) | View |
2023-01-20 Option Award | 2023-01-24 4:46 pm | N/A N/A | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 13,179 | $0 | 7,968,241 (Direct) | View |
2022-08-04 Option Award | 2022-08-08 6:26 pm | N/A N/A | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 165,289 | $0 | 7,955,062 (Direct) | View |
2022-03-21 Conversion | 2022-03-23 4:30 pm | 2022-02-02 2023-02-02 | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 5,832,197 | $0 | 242,656 (Indirect) | View |
2021-06-03 Option Award | 2021-06-07 6:54 pm | N/A N/A | FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director | 103,774 | $0 | 4,944,743 (Direct) | View |