PETER R KELLOGG

CIK 897485 · last filed 2026-07-08

"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

$1.21M

Companies

5

Total Filings

173

Lifetime Open-Market Net

-$12.31M

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
MERC 10%+ Owner 2,370,231 $0.51 $1.21M $362.7K 2 2026-07-08
MERCS 10%+ Owner 1,190,929 $68.77M 68 2026-05-20
PRESSTEK INC /DE/ (PRST) Delisted 10%+ Owner 9,457,217 $0.02 $188.2K $12.54M 16 2010-04-15
THORATEC CORP (THOR) Delisted 4,339,099 -$14.50M 4 2008-11-17
CHATTEM INC (CHTT) Delisted 10%+ Owner 1,800,000 -$79.48M 4 2008-07-29

Recent Filings · Page 6 of 18

173 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
2017-03-03 Buy (P) +25,000 $31.2K
2017-02-17 Buy (P) +23,000 $28.2K
2017-02-01 Buy (P) +23,000 $29.8K
2017-01-27 Buy (P) +30,600 $36.4K
2017-01-03 Buy (P) +40,030 $47.4K
2016-12-29 Buy (P) +44,900 $46.0K
2016-12-16 Buy (P) +135,364 $132.2K
2016-12-14 Buy (P) +28,500 $27.1K
2016-11-14 MERCS Buy (P) +1,888 $15.9K EDGAR
2016-11-09 MERCS Buy (P) +54,648 $453.4K EDGAR
Showing 5160 of 173
Page 6 of 18
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.