David Nierenberg

Sits on 1 board. Last updated September 28, 2026

Time on boards

Boards served
1
Current seats
1
Board service
4 years
Director since
2023

4 years of board service in total across 1 board, counting each seat separately. Longest: Flotek Industries Inc., 3 years.

3 years ยท Since 2023

Shareholder support

Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Date Company Transaction Shares Price Value
Dec 14, 2023 Flotek Industries Inc. Open-market purchase +6,785 $3.72 $25,240
Dec 14, 2023 Flotek Industries Inc. Open-market purchase +11,948 $3.72 $44,447
Dec 14, 2023 Flotek Industries Inc. Open-market purchase +748 $3.72 $2,783
Dec 13, 2023 Flotek Industries Inc. Open-market purchase +11,536 $3.53 $40,722
Dec 13, 2023 Flotek Industries Inc. Open-market purchase +20,310 $3.53 $71,694
Dec 13, 2023 Flotek Industries Inc. Open-market purchase +1,272 $3.53 $4,490
Dec 12, 2023 Flotek Industries Inc. Open-market purchase +4,954 $3.42 $16,943
Dec 12, 2023 Flotek Industries Inc. Open-market purchase +6,923 $3.42 $23,677
Dec 12, 2023 Flotek Industries Inc. Open-market purchase +858 $3.42 $2,934
Dec 11, 2023 Flotek Industries Inc. Open-market purchase +5,254 $3.19 $16,760
Dec 11, 2023 Flotek Industries Inc. Open-market purchase +3,752 $3.19 $11,969
Jul 1, 2023 Flotek Industries Inc. Grant or award +241,096 โ€” โ€”
Jun 7, 2023 Flotek Industries Inc. Open-market sale โˆ’538,920 $0.63 $339,520
Jun 7, 2023 Flotek Industries Inc. Open-market sale โˆ’211,080 $0.63 $132,980
Jan 20, 2023 Flotek Industries Inc. Grant or award +13,179 โ€” โ€”

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