- Corporate Officers - B
- Bieber Michael A
Insider Trading History of Bieber Michael A
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Bieber Michael A since 2015.
This trader's CIK number is 1270606.
At the time of last reporting, Bieber Michael A was the PRESIDENT AND CEO of Willdan Group, Inc.. (stock ticker symbol WLDN).
Also see all insider trading activities at Willdan Group, Inc..
Note that in the past
BIEBER MICHAEL A also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Willdan Group, Inc. (WLDN) by Bieber Michael A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2026 | WLDN | 0 | $0 | 66,667 | $6,157,144 | 66,667 | $1,422,460 |
| 2025 | WLDN | 0 | $0 | 25,000 | $1,202,750 | 25,000 | $347,750 |
| 2024 | WLDN | 0 | $0 | 71,901 | $2,643,039 | 77,764 | $1,049,032 |
| 2023 | WLDN | 0 | $0 | 11,918 | $220,838 | 0 | $0 |
| 2022 | WLDN | 0 | $0 | 53,135 | $1,460,286 | 25,000 | $228,249 |
| 2021 | WLDN | 0 | $0 | 48,784 | $1,979,226 | 22,236 | $299,963 |
| 2020 | WLDN | 0 | $0 | 30,934 | $735,919 | 0 | $0 |
| 2018 | WLDN | 0 | $0 | 4,000 | $107,960 | 0 | $0 |
| 2015 | WLDN | 4,000 | $55,800 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Tetra Tech Inc (TTEK) by Bieber Michael A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2015 | TTEK | 0 | $0 | 67,813 | $1,709,436 | 67,813 | $1,496,658 |
Insider trading activities at 2 companies by Bieber Michael A:
1. Willdan Group, Inc. (WLDN)
2. Tetra Tech Inc (TTEK)
Table 1. Insider trading of Willdan Group, Inc. (WLDN) by Bieber Michael A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2026-05-14 | WLDN | Option Ex | 56,676 | 22.23 | 1,259,907 |
| 2026-05-14 | WLDN | Sale | 56,676 | 92.31 | 5,231,478 |
| 2026-05-13 | WLDN | Option Ex | 9,991 | 16.27 | 162,553 |
| 2026-05-13 | WLDN | Sale | 9,991 | 92.65 | 925,666 |
| 2025-05-16 | WLDN | Sale | 25,000 | 48.11 | 1,202,750 |
| 2025-05-16 | WLDN | Option Ex | 25,000 | 13.91 | 347,750 |
| 2024-11-11 | WLDN | Option Ex | 10,868 | 13.49 | 146,609 |
| 2024-11-11 | WLDN | Sale | 10,868 | 45.67 | 496,341 |
| 2024-11-06 | WLDN | Option Ex | 1,804 | 13.49 | 24,335 |
| 2024-11-06 | WLDN | Sale | 1,804 | 45.86 | 82,731 |
| 2024-08-12 | WLDN | Option Ex | 750 | 13.49 | 10,117 |
| 2024-08-12 | WLDN | Sale | 750 | 36.46 | 27,345 |
| 2024-08-09 | WLDN | Sale | 9,209 | 36.36 | 334,839 |
| 2024-08-08 | WLDN | Sale | 10,273 | 36.43 | 374,245 |
| 2024-08-09 | WLDN | Option Ex | 9,209 | 13.49 | 124,229 |
| 2024-08-08 | WLDN | Option Ex | 10,273 | 13.49 | 138,582 |
| 2024-08-06 | WLDN | Option Ex | 12,000 | 13.49 | 161,880 |
| 2024-08-07 | WLDN | Option Ex | 10,346 | 13.49 | 139,567 |
| 2024-08-06 | WLDN | Sale | 12,000 | 36.58 | 438,960 |
| 2024-08-07 | WLDN | Sale | 10,346 | 36.61 | 378,767 |
| 2024-06-13 | WLDN | Option Ex | 6,000 | 13.49 | 80,940 |
| 2024-06-13 | WLDN | Sale | 4,460 | 30.32 | 135,227 |
| 2024-06-11 | WLDN | Sale | 4,464 | 30.25 | 135,036 |
| 2024-06-12 | WLDN | Sale | 4,394 | 30.98 | 136,126 |
| 2024-06-11 | WLDN | Option Ex | 6,000 | 13.49 | 80,940 |
| 2024-06-12 | WLDN | Option Ex | 6,000 | 13.49 | 80,940 |
| 2024-06-10 | WLDN | Option Ex | 4,514 | 13.49 | 60,893 |
| 2024-06-10 | WLDN | Sale | 3,333 | 31.03 | 103,422 |
| 2023-08-24 | WLDN | Sale | 1,026 | 24.52 | 25,157 |
| 2023-08-22 | WLDN | Sale | 1,216 | 22.82 | 27,749 |
| 2023-08-23 | WLDN | Sale | 1,170 | 23.55 | 27,553 |
| 2023-03-13 | WLDN | Sale | 2,852 | 16.46 | 46,943 |
| 2023-03-10 | WLDN | Sale | 2,722 | 15.98 | 43,505 |
| 2023-03-09 | WLDN | Sale | 2,932 | 17.03 | 49,931 |
| 2022-08-10 | WLDN | Sale | 27,277 | 27.63 | 753,663 |
| 2022-08-10 | WLDN | Option Ex | 24,666 | 9.13 | 225,200 |
| 2022-08-09 | WLDN | Sale | 456 | 28.00 | 12,768 |
| 2022-08-09 | WLDN | Option Ex | 334 | 9.13 | 3,049 |
| 2022-03-15 | WLDN | Sale | 25,402 | 27.32 | 693,855 |
| 2021-09-08 | WLDN | Option Ex | 22,236 | 13.49 | 299,963 |
| 2021-09-08 | WLDN | Sale | 22,236 | 37.88 | 842,299 |
| 2011-03-23 | WLDN | Sale | 2,116 | 38.17 | 80,767 |
| 2021-03-23 | WLDN | Sale | 1,566 | 38.20 | 59,821 |
| 2021-03-22 | WLDN | Sale | 4,478 | 40.52 | 181,426 |
| 2021-03-24 | WLDN | Sale | 5,040 | 36.64 | 184,665 |
| 2021-03-12 | WLDN | Sale | 3,972 | 48.57 | 192,912 |
| 2021-03-15 | WLDN | Sale | 5,350 | 46.73 | 250,005 |
| 2021-03-16 | WLDN | Sale | 181 | 45.97 | 8,320 |
| 2021-03-11 | WLDN | Sale | 3,845 | 46.56 | 179,011 |
| 2020-06-19 | WLDN | Sale | 30,934 | 23.79 | 735,919 |
| 2018-05-23 | WLDN | Sale | 4,000 | 26.99 | 107,960 |
| 2015-06-12 | WLDN | Buy | 4,000 | 13.95 | 55,800 |
Table 2. Insider trading of Tetra Tech Inc (TTEK) by Bieber Michael A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2015-02-25 | TTEK | Sale | 44,897 | 25.20 | 1,131,449 |
| 2015-02-26 | TTEK | Sale | 22,916 | 25.22 | 577,987 |
| 2015-02-25 | TTEK | Option Ex | 44,897 | 21.38 | 959,897 |
| 2015-02-26 | TTEK | Option Ex | 22,916 | 23.42 | 536,761 |
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above table cannot be completely guaranteed as to their accuracy.
For more information regarding the trades made by Bieber Michael A
(PRESIDENT AND CEO of Willdan Group, Inc. at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.