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

$24.36M

Companies

2

Total Filings

88

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 $96.30 $24.06M -$14.41M 61 2026-05-15
TTEK SENIOR VICE PRESIDENT 10,796 $28.43 $306.9K -$4.24M 27 2015-02-27

Recent Filings · Page 4 of 9

88 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2023-03-14 WLDN Sell (S) −2,852 -$46.7K EDGAR
2023-03-13 WLDN Sell (S) −2,722 -$42.5K EDGAR
2023-03-10 WLDN Sell (S) −2,932 -$49.9K EDGAR
2023-03-08 WLDN Grant (A) +13,300 $0 EDGAR
2022-08-12 WLDN Mixed −2,611 -$529.1K EDGAR
2022-08-11 WLDN Mixed −122 -$9.7K EDGAR
2022-03-30 WLDN Mixed +6,217 -$210.8K EDGAR
2022-03-17 WLDN Sell (S) −25,402 -$712.3K EDGAR
2022-03-16 WLDN Grant (A) +43,466 $0 EDGAR
2022-03-10 WLDN Grant (A) +18,051 $0 EDGAR
Showing 3140 of 88
Page 4 of 9
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.