Michael A. Bieber, President and CEO of Willdan Group, Inc. ($WLDN), sold shares once on the open market in the last 365 days for a total of $1.2 million. His most recent sale occurred on May 16, 2025. This places him 4,516th among 11,678 insiders by sale value, below the average of $8.6 million across about 6.4 transactions per insider. Bieber made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 25, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 6444 | $82.80 | 249,525.0000 | 15,260,000 | 2.52% | 0.04% |
| March 25, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 15750 | $0.00 | 255,969.0000 | 15,260,000 | 6.56% | 0.10% |
| March 20, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 2387 | $75.52 | 240,219.0000 | 15,260,000 | 0.98% | 0.02% |
| March 17, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 2625 | $78.29 | 242,606.0000 | 15,260,000 | 1.07% | 0.02% |
| March 16, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 17326 | $0.00 | 252,321.0000 | 15,260,000 | 7.37% | 0.11% |
| March 16, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 7090 | $78.61 | 245,231.0000 | 15,260,000 | 2.81% | 0.05% |
| March 11, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 7697 | $83.98 | 234,995.0000 | 15,260,000 | 3.17% | 0.05% |
| March 11, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 18810 | $0.00 | 242,692.0000 | 15,260,000 | 8.40% | 0.12% |
| March 9, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 1814 | $82.98 | 223,882.0000 | 15,260,000 | 0.80% | 0.01% |
| March 3, 2026 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 18000 | $0.00 | 225,696.0000 | 15,260,000 | 8.67% | 0.12% |
| Aug. 18, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 6788 | $109.53 | 207,542.0000 | 14,917,000 | 3.17% | 0.05% |
| Aug. 18, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 12963 | $0.00 | 214,330.0000 | 14,917,000 | 6.44% | 0.09% |
| May 16, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 25000 | $0.00 | 0.0000 | 14,628,000 | 100.00% | 0.17% |
| May 16, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 25000 | $48.11 | 200,981.0000 | 14,628,000 | 11.06% | 0.17% |
| May 16, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 25000 | $13.91 | 225,981.0000 | 14,628,000 | 12.44% | 0.17% |
| March 24, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 15750 | $0.00 | 209,227.0000 | 14,509,000 | 8.14% | 0.11% |
| March 24, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 8246 | $42.53 | 200,981.0000 | 14,509,000 | 3.94% | 0.06% |
| March 20, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 3054 | $43.06 | 193,477.0000 | 14,509,000 | 1.55% | 0.02% |
| March 17, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 19250 | $0.00 | 196,531.0000 | 14,509,000 | 10.86% | 0.13% |
| March 11, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 6268 | $40.11 | 177,281.0000 | 14,509,000 | 3.41% | 0.04% |
| March 11, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 11970 | $0.00 | 183,549.0000 | 14,509,000 | 6.98% | 0.08% |
| March 7, 2025 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 2429 | $41.80 | 171,579.0000 | 14,509,000 | 1.40% | 0.02% |
| Nov. 11, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 10868 | $13.49 | 184,522.0000 | 14,358,000 | 6.26% | 0.08% |
| Nov. 11, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 10868 | $45.67 | 173,654.0000 | 14,358,000 | 5.89% | 0.08% |
| Nov. 11, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 10868 | $0.00 | 0.0000 | 14,358,000 | 100.00% | 0.08% |
| Nov. 6, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 1804 | $0.00 | 10,868.0000 | 14,358,000 | 14.24% | 0.01% |
| Nov. 6, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 1804 | $45.86 | 173,654.0000 | 14,358,000 | 1.03% | 0.01% |
| Nov. 6, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 1804 | $13.49 | 175,458.0000 | 14,358,000 | 1.04% | 0.01% |
| Aug. 19, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 8246 | $0.00 | 177,972.0000 | 14,074,000 | 4.86% | 0.06% |
| Aug. 19, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 4318 | $37.36 | 173,654.0000 | 14,074,000 | 2.43% | 0.03% |
| Aug. 12, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 750 | $13.49 | 170,476.0000 | 14,074,000 | 0.44% | 0.01% |
| Aug. 12, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 750 | $0.00 | 12,672.0000 | 14,074,000 | 5.59% | 0.01% |
| Aug. 12, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 750 | $36.46 | 169,726.0000 | 14,074,000 | 0.44% | 0.01% |
| Aug. 9, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 9209 | $0.00 | 13,422.0000 | 14,074,000 | 40.69% | 0.07% |
| Aug. 8, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 10273 | $13.49 | 179,999.0000 | 14,074,000 | 6.05% | 0.07% |
| Aug. 8, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 10273 | $36.43 | 169,726.0000 | 14,074,000 | 5.71% | 0.07% |
| Aug. 9, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 9209 | $13.49 | 178,935.0000 | 14,074,000 | 5.43% | 0.07% |
| Aug. 9, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 9209 | $36.36 | 169,726.0000 | 14,074,000 | 5.15% | 0.07% |
| Aug. 8, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 10273 | $0.00 | 22,631.0000 | 14,074,000 | 31.22% | 0.07% |
| Aug. 6, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 12000 | $0.00 | 43,250.0000 | 14,074,000 | 21.72% | 0.09% |
| Aug. 7, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 10346 | $0.00 | 32,904.0000 | 14,074,000 | 23.92% | 0.07% |
| Aug. 6, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 12000 | $36.58 | 169,726.0000 | 14,074,000 | 6.60% | 0.09% |
| Aug. 7, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 10346 | $13.49 | 180,072.0000 | 14,074,000 | 6.10% | 0.07% |
| Aug. 7, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 10346 | $36.61 | 169,726.0000 | 14,074,000 | 5.75% | 0.07% |
| Aug. 6, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 12000 | $13.49 | 181,726.0000 | 14,074,000 | 7.07% | 0.09% |
| June 13, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 6000 | $13.49 | 173,503.0000 | 13,910,000 | 3.58% | 0.04% |
| June 13, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 4460 | $30.32 | 169,043.0000 | 13,910,000 | 2.57% | 0.03% |
| June 13, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 6000 | $0.00 | 55,250.0000 | 13,910,000 | 9.80% | 0.04% |
| June 11, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 4464 | $30.25 | 165,897.0000 | 13,910,000 | 2.62% | 0.03% |
| June 12, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 6000 | $13.49 | 171,897.0000 | 13,910,000 | 3.62% | 0.04% |
| June 12, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 4394 | $30.98 | 167,503.0000 | 13,910,000 | 2.56% | 0.03% |
| June 11, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 6000 | $0.00 | 67,250.0000 | 13,910,000 | 8.19% | 0.04% |
| June 12, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 6000 | $0.00 | 61,250.0000 | 13,910,000 | 8.92% | 0.04% |
| June 11, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 6000 | $13.49 | 170,361.0000 | 13,910,000 | 3.65% | 0.04% |
| June 10, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Common Stock | 4514 | $13.49 | 167,694.0000 | 13,910,000 | 2.77% | 0.03% |
| June 10, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | M | Stock Options (Right to Buy) | 4514 | $0.00 | 73,250.0000 | 13,910,000 | 5.80% | 0.03% |
| June 10, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | S | Common Stock | 3333 | $31.03 | 164,361.0000 | 13,910,000 | 1.99% | 0.02% |
| March 20, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 17500 | $0.00 | 156,513.0000 | 13,731,000 | 12.59% | 0.13% |
| March 20, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 5303 | $27.55 | 163,180.0000 | 13,731,000 | 3.15% | 0.04% |
| March 20, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | A | Common Stock | 11970 | $0.00 | 168,483.0000 | 13,731,000 | 7.65% | 0.09% |
| March 7, 2024 | Willdan Group, Inc. | $WLDN | BIEBER MICHAEL A | PRESIDENT AND CEO | F | Common Stock | 2201 | $19.85 | 139,013.0000 | 13,731,000 | 1.56% | 0.02% |