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 |
2020-09-11 Purchase |
2020-09-15 7:11 pm |
FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director |
115,318 | $2.4847 | $286,534 | 290,768 (Indirect Direct) |
View |
2020-09-08 Purchase |
2020-09-10 4:38 pm |
FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director |
69,343 | $2.4337 | $168,761 | 287,312 (Indirect Direct) |
View |
2020-09-01 Purchase |
2020-09-03 7:34 pm |
FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director |
163,420 | $2.3976 | $391,810 | 285,234 (Indirect Direct) |
View |
2020-08-20 Purchase |
2020-08-24 6:21 pm |
FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director |
690,147 | $1.9969 | $1,378,133 | 280,337 (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 |
2020-06-11 Option Award |
2020-06-15 4:18 pm |
N/A N/A |
ROSETTA STONE INC | RST | Nierenberg David Director |
13,706 | $0 | 52,565 (Direct) |
View |
2020-05-05 Option Award |
2020-05-07 9:30 pm |
N/A N/A |
FLOTEK INDUSTRIES INC | FTK | Nierenberg David Director |
89,888 | $0 | 3,603,950 (Direct) |
View |