William A. Schromm

CIK 1363806 · EVP & Chief Operating Officer · last filed 2020-11-17

"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.

Loading insider history…
Disclosed Exposure

$44.08M

Companies

3

Total Filings

86

Lifetime Open-Market Net

-$13.82M

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 & Chief Operating Officer 489,025 $90.13 $44.08M -$10.33M 35 2020-11-17
COHERENT CORP. (IIVI) Delisted Director 12,069 $227.08 $2.74M $0 4 2018-08-30
ON SEMICONDUCTOR CORP (ONNN) Delisted EVP & Chief Operating Officer 414,605 -$3.50M 47 2015-03-27

Recent Filings · Page 5 of 9

86 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
2015-03-09 ON SEMICONDUCTOR CORP (ONNN) Delisted Tax (F) −2,723 -$35.5K EDGAR
2015-03-05 ON SEMICONDUCTOR CORP (ONNN) Delisted Tax (F) −4,286 -$55.2K EDGAR
2015-03-04 ON SEMICONDUCTOR CORP (ONNN) Delisted Grant (A) +41,794 $0 EDGAR
2015-03-03 ON SEMICONDUCTOR CORP (ONNN) Delisted Mixed +77,674 -$115.0K EDGAR
2015-02-10 ON SEMICONDUCTOR CORP (ONNN) Delisted Sell (S) −10,000 -$110.0K EDGAR
2015-01-15 ON SEMICONDUCTOR CORP (ONNN) Delisted Sell (S) −35,000 -$367.5K EDGAR
2014-12-08 ON SEMICONDUCTOR CORP (ONNN) Delisted Sell (S) −35,000 -$350.0K EDGAR
2014-11-03 ON SEMICONDUCTOR CORP (ONNN) Delisted Mixed +4,750 $38.0K EDGAR
2014-09-10 ON SEMICONDUCTOR CORP (ONNN) Delisted Mixed -$80.0K EDGAR
2014-09-08 ON SEMICONDUCTOR CORP (ONNN) Delisted Mixed -$23.3K EDGAR
Showing 4150 of 86
Page 5 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.