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

$18.74M

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 $67.71 $16.91M -$14.41M 61 2026-05-15
TTEK SENIOR VICE PRESIDENT 53,980 $33.78 $1.82M -$4.24M 27 2015-02-27

Recent Filings · Page 4 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
2024-08-07 WLDN Notice (144) −12,000 -$437.4K EDGAR
2024-08-07 WLDN Notice (144) −12,000 -$437.4K EDGAR
2024-06-14 WLDN Mixed +1,540 -$54.3K EDGAR
2024-06-13 WLDN Notice (144) −4,460 -$135.1K EDGAR
2024-06-13 WLDN Mixed +3,142 -$109.3K EDGAR
2024-06-12 WLDN Notice (144) −4,394 -$136.1K EDGAR
2024-06-12 WLDN Notice (144) −3,366 -$101.7K EDGAR
2024-06-12 WLDN Mixed +1,181 -$42.5K EDGAR
2024-06-11 WLDN Notice (144) −4,431 -$137.4K EDGAR
2024-03-22 WLDN Mixed +24,167 -$146.1K EDGAR
Showing 3140 of 102
Page 4 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.