Insider Trading & Ownership - NIERENBERG DAVID

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>>
Time period
Insider Trading Transactions for NIERENBERG DAVID
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