MICHAEL A BIEBER

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

MICHAEL A BIEBER is a PRESIDENT AND CEO who has filed 102 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for WLDN, was dated May 15, 2026. Across all open-market trades the lifetime net is −$18.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $18.8M across reported positions.

"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.

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

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
2026-05-15	WLDN	Mixed	—	-$4.07M	EDGAR
2026-05-14	WLDN	Notice (144)	−56,676	-$5.19M	EDGAR
2026-05-14	WLDN	Mixed	—	-$763.1K	EDGAR
2026-05-13	WLDN	Notice (144)	−9,991	-$925.7K	EDGAR
2026-03-26	WLDN	Mixed	+9,306	-$533.6K	EDGAR
2026-03-23	WLDN	Tax (F)	−2,387	-$180.3K	EDGAR
2026-03-19	WLDN	Tax (F)	−2,625	-$205.5K	EDGAR
2026-03-17	WLDN	Mixed	+10,236	-$557.3K	EDGAR
2026-03-12	WLDN	Mixed	+11,113	-$646.4K	EDGAR
2026-03-11	WLDN	Tax (F)	−1,814	-$150.5K	EDGAR

Showing 1–10 of 102

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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.