MICHAEL A BIEBER

CIK 1270606 · PRESIDENT AND CEO · last filed 2026-05-15

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$18.79M

Companies

2

Total Filings

102

Lifetime Open-Market Net

-$18.64M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
WLDN PRESIDENT AND CEO 249,801 $67.89 $16.96M -$14.41M 61 2026-05-15
TTEK SENIOR VICE PRESIDENT 53,980 $33.92 $1.83M -$4.24M 27 2015-02-27

Recent Filings · Page 2 of 11

102 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-03-05 WLDN Grant (A) +18,000 $0 EDGAR
2025-08-20 WLDN Mixed +6,175 -$743.5K EDGAR
2025-05-20 WLDN Mixed -$855.0K EDGAR
2025-05-16 WLDN Notice (144) −25,000 -$1.20M EDGAR
2025-03-26 WLDN Mixed +7,504 -$350.7K EDGAR
2025-03-24 WLDN Tax (F) −3,054 -$131.5K EDGAR
2025-03-19 WLDN Grant (A) +19,250 $0 EDGAR
2025-03-12 WLDN Mixed +5,702 -$251.4K EDGAR
2025-03-11 WLDN Tax (F) −2,429 -$101.5K EDGAR
2024-11-12 WLDN Notice (144) −1,672 -$75.4K EDGAR
Showing 1120 of 102
Page 2 of 11
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.