WILLIAM J POST

CIK 1027958 · CEO & Chairman · last filed 2026-07-01

WILLIAM J POST is a CEO & Chairman who has filed 89 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for FSLR, was dated Jul 1, 2026. Across all open-market trades the lifetime net is −$6.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $14.9M 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

$14.92M

Companies

4

Total Filings

89

Lifetime Open-Market Net

-$6.57M

Filer Profile

Reported Address

400 NORTH FIFTH STREET
.
PHOENIX, AZ 85004

State of Incorporation

Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
FSLR	Director	33,889	$205.39	$6.96M	-$2.19M	65	2026-07-01
US AIRWAYS GROUP INC (LCC) Delisted	Director	0	—	—	$0	3	2013-12-09
Knight-Swift Transportation Holdings Inc. (SWFT) Delisted	Director	5,670	—	—	$0	3	2013-02-26
PNW	Director	81,817	$97.34	$7.96M	-$4.38M	16	2010-02-23

Recent Filings

89 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
2026-07-01	FSLR	Grant (A)	+223	$0	EDGAR
2026-04-01	FSLR	Grant (A)	+267	$0	EDGAR
2026-01-05	FSLR	Grant (A)	+173	$0	EDGAR
2025-10-01	FSLR	Grant (A)	+205	$0	EDGAR
2025-07-01	FSLR	Grant (A)	+272	$0	EDGAR
2025-04-01	FSLR	Grant (A)	+356	$0	EDGAR
2025-01-06	FSLR	Grant (A)	+256	$0	EDGAR
2024-10-01	FSLR	Grant (A)	+181	$0	EDGAR
2024-07-01	FSLR	Grant (A)	+200	$0	EDGAR
2024-04-02	FSLR	Grant (A)	+267	$0	EDGAR

Showing 1–10 of 89

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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.