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ROBERT A. KLOSTERBOER

CIK 1429850 · EVP & GM, ASG · last filed 2018-03-16

ROBERT A. KLOSTERBOER is an EVP & GM, ASG who has filed 85 SEC Form 4 insider transactions across 2 companies since 2008. The most recent filing shows the insider sold $420.5K of ON on Mar 16, 2018. Across all open-market trades the lifetime net is −$6.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $32.7M 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

$32.72M

Companies

2

Total Filings

85

Lifetime Open-Market Net

-$6.33M

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
ON EVP & GM, ASG 363,030 $90.13 $32.72M -$3.64M 24 2018-03-16
ON SEMICONDUCTOR CORP (ONNN) Delisted EVP & GM, APG 318,730 — — -$2.69M 61 2015-03-27

Recent Filings

85 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
2018-03-16 ON Sell (S) −16,249 -$420.5K EDGAR
2018-03-09 ON Tax (F) −10,445 -$269.1K EDGAR
2018-03-07 ON Mixed +20,669 $501.7K EDGAR
2018-03-06 ON Tax (F) −6,802 -$166.2K EDGAR
2018-02-22 ON Sell (S) −18,713 -$434.3K EDGAR
2018-01-11 ON Sell (S) −15,278 -$347.5K EDGAR
2017-11-14 ON Mixed — -$366.5K EDGAR
2017-10-26 ON Sell (S) −16,325 -$330.3K EDGAR
2017-08-09 ON Mixed +101,853 -$511.7K EDGAR
2017-06-22 ON Sell (S) −10,000 -$154.0K EDGAR
Showing 1–10 of 85
Page 1 of 9
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.