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THOMAS SONDERMAN

CIK 1611597 · CEO · last filed 2026-07-31

THOMAS SONDERMAN is a CEO who has filed 52 SEC Form 4 insider transactions across 2 companies since 2014. The most recent filing, for SKYT, was dated Jul 31, 2026. Across all open-market trades the lifetime net is −$2.0M, making them a net seller over the disclosed history. 15 SEC filings were submitted jointly with RUDOLPH TECHNOLOGIES INC.

"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

$0

Companies

2

Total Filings

52

Lifetime Open-Market Net

-$1.98M

Filer Profile

Reported Address
16 JONSPIN ROAD
WILMINGTON, MA 01887
Related Filers
RUDOLPH TECHNOLOGIES INC — 15 joint filings, latest 2017-10-10
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
SkyWater Technology, Inc (SKYT) Delisted CEO 0 $32.46 $0 -$1.96M 32 2026-07-31
RUDOLPH TECHNOLOGIES INC (RTEC) Delisted 20,099 — — -$13.2K 13 2017-07-12

Recent Filings

52 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
2026-07-31 SkyWater Technology, Inc (SKYT) Delisted Disp (D) −553,244 $0 EDGAR
2026-03-18 SkyWater Technology, Inc (SKYT) Delisted Tax (F) −13,201 -$367.8K EDGAR
2026-03-17 SkyWater Technology, Inc (SKYT) Delisted Grant (A) +50,455 $0 EDGAR
2026-02-19 SkyWater Technology, Inc (SKYT) Delisted Tax (F) −5,767 -$165.9K EDGAR
2025-11-25 SkyWater Technology, Inc (SKYT) Delisted Sell (S) −5,210 -$69.7K EDGAR
2025-11-21 SkyWater Technology, Inc (SKYT) Delisted Notice (144) −5,210 -$69.7K EDGAR
2025-11-18 SkyWater Technology, Inc (SKYT) Delisted Sell (S) −5,207 -$88.5K EDGAR
2025-11-14 SkyWater Technology, Inc (SKYT) Delisted Notice (144) −5,207 -$88.5K EDGAR
2025-09-11 SkyWater Technology, Inc (SKYT) Delisted Sell (S) −8,355 -$88.4K EDGAR
2025-09-10 SkyWater Technology, Inc (SKYT) Delisted Notice (144) −8,355 -$88.4K EDGAR
Showing 1–10 of 52
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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.