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CHRISTOPHER A SEAMS

CIK 1212426 · Executive Vice President · last filed 2026-05-22

CHRISTOPHER A SEAMS is an Executive Vice President who has filed 66 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for ONTO, was dated May 22, 2026. Across all open-market trades the lifetime net is −$27.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $12.1M 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.

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Disclosed Exposure

$12.11M

Companies

5

Total Filings

66

Lifetime Open-Market Net

-$27.42M

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
ONTO Director 38,513 $291.35 $11.22M $0 7 2026-05-22
XPER Director 130,269 $6.81 $887.1K -$132.5K 14 2026-04-21
ONTO INNOVATION INC. (NANO) Delisted Director 23,229 — — $0 5 2019-05-23
Xperi Corp (TSRA) Delisted Director 34,780 — — -$242.3K 6 2017-01-11
CYPRESS SEMICONDUCTOR CORP /DE/ (CY) Delisted Executive Vice President 779,929 — — -$27.05M 33 2013-03-25

Recent Filings

66 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
2026-05-22 ONTO Grant (A) +761 $0 EDGAR
2026-04-21 XPER Grant (A) +29,320 $0 EDGAR
2025-05-23 ONTO Grant (A) +2,114 $0 EDGAR
2025-04-29 XPER Grant (A) +25,815 $0 EDGAR
2024-05-31 XPER Grant (A) +21,739 $0 EDGAR
2024-05-23 ONTO Grant (A) +809 $0 EDGAR
2023-05-11 ONTO Grant (A) +2,200 $0 EDGAR
2023-05-01 XPER Grant (A) +19,978 $0 EDGAR
2022-10-04 XPER Grant (A) +4,872 $0 EDGAR
2022-05-12 ONTO Grant (A) +2,100 $0 EDGAR
Showing 1–10 of 66
Page 1 of 7
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.