David Nierenberg

Insider Reports History

Reporting-owner location: Camas, WA
Latest reporting-owner signature: NIERENBERG INVESTMENT MANAGEMENT COMPANY, INC. By: /s/ David Nierenberg Name: David Nierenberg Title:President
Source: Latest parsed Forms 3/4/5 signature
Transaction source note: Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for David Nierenberg

Form 4 holding 10%+ Owner

POTBELLY CORP

Security class: Common Stock
Shares / value: 1,561,985
Estimated value: $14,620,180
Report date: 28 Mar 2025
Price: $9.36
Ownership: By: The D3 Family Bulldog Fund, L.P.

Form 4 holding 10%+ Owner

POTBELLY CORP

Security class: Common Stock
Shares / value: 887,555
Estimated value: $8,307,515
Report date: 28 Mar 2025
Price: $9.36
Ownership: By: The D3 Family Fund, L.P.

Form 4 holding 10%+ Owner

POTBELLY CORP

Security class: Common Stock
Shares / value: 425,555
Estimated value: $3,983,195
Report date: 28 Mar 2025
Price: $9.36
Ownership: By: Benedict Value Fund, L.P.

Form 4 holding Director

FLOTEK INDUSTRIES INC/CN/

Security class: Common Shares
Shares / value: 765,150
Estimated value: $2,547,950
Report date: 14 Dec 2023
Price: $3.33
Ownership: By The D3 Family Bulldog Fund, LP

Form 4 holding Director

FLOTEK INDUSTRIES INC/CN/

Security class: Common Shares
Shares / value: 434,580
Estimated value: $1,447,151
Report date: 14 Dec 2023
Price: $3.33
Ownership: By The D3 Family Fund, LP

Form 4 holding 10%+ Owner

POTBELLY CORP

Security class: Common Stock
Shares / value: 124,167
Estimated value: $1,162,203
Report date: 28 Mar 2025
Price: $9.36
Ownership: Direct

Form 4 holding 10%+ Owner

POTBELLY CORP

Security class: Common Stock
Shares / value: 105,469
Estimated value: $987,190
Report date: 28 Mar 2025
Price: $9.36
Ownership: By: Haredale Ltd.

Form 4 holding Director

FLOTEK INDUSTRIES INC/CN/

Security class: Common Shares
Shares / value: 69,929
Estimated value: $232,864
Report date: 14 Dec 2023
Price: $3.33
Ownership: Direct

Form 4 holding Director

FLOTEK INDUSTRIES INC/CN/

Security class: Common Shares
Shares / value: 47,907
Estimated value: $159,530
Report date: 14 Dec 2023
Price: $3.33
Ownership: By Haredale Ltd.

Form 4 holding 10%+ Owner

POTBELLY CORP

Security class: Common Stock
Shares / value: 3,150
Estimated value: $29,484
Report date: 28 Mar 2025
Price: $9.36
Ownership: By: Spouse

Form 4 holding 10%+ Owner

POTBELLY CORP

Security class: Common Stock
Shares / value: 1,590
Estimated value: $14,882
Report date: 28 Mar 2025
Price: $9.36
Ownership: By: Children

Form 4 holding Director, 10%+ Owner

Houston Wire & Cable CO

Security class: COMMON STOCK
Shares / value: 0
Estimated value
Report date: 15 Jun 2021
Price
Ownership: By D3 Family Bulldog Fund LP

Form 4 holding Director, 10%+ Owner

Houston Wire & Cable CO

Security class: COMMON STOCK
Shares / value: 0
Estimated value
Report date: 15 Jun 2021
Price
Ownership: By D3 Family Fund LP

Form 4 holding Director, 10%+ Owner

Houston Wire & Cable CO

Security class: COMMON STOCK
Shares / value: 0
Estimated value
Report date: 15 Jun 2021
Price
Ownership: By Haredale LTD

Insider Reports Filed by David Nierenberg

4 PBPB

POTBELLY CORP

Report period: 28 Mar 2025
Transactions: 1
Transaction value: +$207,502
Accepted by SEC: 31 Mar 2025, 09:30
Role: 10%+ Owner
Next action: Open filing details

4 PBPB

POTBELLY CORP

Report period: 07 Jan 2025
Transactions: 2
Transaction value: +$70,149
Accepted by SEC: 10 Jan 2025, 19:45
Role: 10%+ Owner
Next action: Open filing details

4 PBPB

POTBELLY CORP

Report period: 18 Dec 2024
Transactions: 2
Transaction value: +$44,367
Accepted by SEC: 20 Dec 2024, 16:37
Role: 10%+ Owner
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 14 Dec 2023
Transactions: 3
Transaction value: +$72,469
Accepted by SEC: 15 Dec 2023, 09:31
Role: Director
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 11 Dec 2023
Transactions: 8
Transaction value: +$189,189
Accepted by SEC: 13 Dec 2023, 16:29
Role: Director
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 01 Jul 2023
Transactions: 1
Transaction value: $0
Accepted by SEC: 05 Jul 2023, 21:32
Role: Director
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 07 Jun 2023
Transactions: 2
Transaction value: -$468,750
Accepted by SEC: 09 Jun 2023, 12:58
Role: Director
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 20 Jan 2023
Transactions: 1
Transaction value: $0
Accepted by SEC: 24 Jan 2023, 15:46
Role: Director
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 04 Aug 2022
Transactions: 1
Transaction value: $0
Accepted by SEC: 08 Aug 2022, 18:26
Role: Director
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 21 Mar 2022
Transactions: 6
Transaction value: -$3,039,167
Accepted by SEC: 23 Mar 2022, 16:30
Role: Director
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 02 Feb 2022
Transactions: 3
Transaction value: +$3,000,001
Accepted by SEC: 04 Feb 2022, 15:14
Role: Director
Next action: Open filing details

Houston Wire & Cable CO

Report period: 15 Jun 2021
Transactions: 3
Transaction value: $0
Accepted by SEC: 21 Jun 2021, 15:30
Role: Director, 10%+ Owner
Next action: Open filing details

4 FTK

FLOTEK INDUSTRIES INC/CN/

Report period: 03 Jun 2021
Transactions: 1
Transaction value: $0
Accepted by SEC: 07 Jun 2021, 18:54
Role: Director
Next action: Open filing details

Insider Reports History

Continue from this owner filing history

Reported holdings for David Nierenberg

Insider Reports Filed by David Nierenberg