Michael A. Bieber is CEO & President at Willdan Group, Inc. (WLDN). They have made 32 open-market trades across 2 companies since 2006, most recently 2026-05-14.
CIK 0001270606
1 open-market purchase totalling $56K since 2015, against 31 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| WLDN | 249,525 | $18.0M |
| TTEK | 16,149 | $561K |
| Total | $18.6M |
Shares reported on the most recent Form 4, priced at the 2026-05-15 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WLDN | SELL | 2026-05-14 | 2026-05-15 | $91.58 | $5.2M | +1.4% | +5.1% | -6.8% |
| WLDN | SELL | 2026-05-13 | 2026-05-14 | $92.65 | $926K | +4.1% | +6.9% | -4.9% |
| WLDN | SELL | 2025-05-16 | 2025-05-20 | $48.11 | $1.2M | +7.6% | +15.3% | +118.7% |
| WLDN | SELL | 2024-11-11 | 2024-11-12 | $45.67 | $993K | -6.8% | -9.1% | -22.4% |
| WLDN | SELL | 2024-11-06 | 2024-11-08 | $45.86 | $165K | -5.9% | -3.9% | -19.2% |
| WLDN | SELL | 2024-08-12 | 2024-08-14 | $36.46 | $27K | +10.3% | +6.3% | +27.4% |
| WLDN | SELL | 2024-08-08 | 2024-08-12 | $36.40 | $1.4M | +0.5% | +2.8% | +27.4% |
| WLDN | SELL | 2024-08-06 | 2024-08-08 | $36.60 | $1.2M | +1.8% | +2.8% | +20.8% |
| WLDN | SELL | 2024-06-13 | 2024-06-14 | $30.32 | $270K | -2.2% | +15.8% | +29.2% |
| WLDN | SELL | 2024-06-11 | 2024-06-13 | $30.73 | $407K | -7.5% | +11.5% | +23.3% |
| WLDN | SELL | 2024-06-10 | 2024-06-12 | $31.03 | $207K | -9.9% | +5.0% | +21.0% |
| WLDN | SELL | 2023-08-24 | 2023-08-28 | $24.36 | $25K | -12.1% | -18.0% | -17.9% |
| WLDN | SELL | 2023-08-22 | 2023-08-24 | $23.16 | $55K | -10.9% | -13.3% | -16.3% |
| WLDN | SELL | 2023-03-13 | 2023-03-14 | $16.39 | $47K | -11.9% | -7.3% | +14.5% |
| WLDN | SELL | 2023-03-10 | 2023-03-13 | $15.62 | $43K | -13.4% | -8.7% | +12.4% |
| WLDN | SELL | 2023-03-09 | 2023-03-10 | $17.03 | $50K | +0.5% | +0.1% | +22.1% |
| WLDN | SELL | 2022-08-10 | 2022-08-12 | $27.65 | $1.5M | -5.9% | -26.4% | -42.3% |
| WLDN | SELL | 2022-08-09 | 2022-08-11 | $28.00 | $13K | -6.8% | -26.6% | -43.9% |
| WLDN | SELL | 2022-03-15 | 2022-03-17 | $28.04 | $1.4M | +7.2% | -6.1% | -15.9% |
| WLDN | SELL | 2021-09-08 | 2021-09-10 | $37.88 | $1.7M | -15.2% | -12.9% | +9.1% |
| WLDN | SELL | 2021-03-11 | 2021-03-23 | $46.79 | $1.1M | +16.4% | +0.3% | -2.1% |
| WLDN | SELL | 2020-06-19 | 2020-06-22 | $23.47 | $726K | +1.4% | +3.5% | +8.3% |
| WLDN | SELL | 2018-05-23 | 2018-05-25 | $26.99 | $108K | +5.1% | +10.1% | +13.9% |
| WLDN | BUY | 2015-06-12 | 2015-06-12 | $13.95 | $56K | -4.6% | +5.8% | +5.8% |
| TTEK | SELL | 2015-02-25 | 2015-02-27 | $25.21 | $1.7M | -8.6% | -0.7% | -0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.