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PETER N KELLOGG

CIK 1226287 · SEE REMARKS · last filed 2026-05-22

PETER N KELLOGG is a corporate insider who has filed 73 SEC Form 4 insider transactions across 6 companies since 2007. The most recent filing, for ALNY, was dated May 22, 2026. Across all open-market trades the lifetime net is −$322.3K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $26.9M 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

$26.87M

Companies

6

Total Filings

73

Lifetime Open-Market Net

-$322.3K

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
ALNY Director 1,446 $246.11 $355.9K $0 4 2026-05-22
YIELD10 BIOSCIENCE, INC. (YTEN) Delisted Director 6 $0.35 $2 $0 10 2019-05-23
CELGENE CORP /DE/ (CELGZ) Delisted SEE REMARKS 49,689 — — $0 25 2018-08-01
YIELD10 BIOSCIENCE, INC. (MBLX) Delisted Director 12,500 — — $0 11 2015-09-14
MRK Exe V-P & CFO 149,553 $149.86 $22.41M $502.4K 18 2014-02-26
BIIB EVP, Finance and CFO 18,966 $216.04 $4.10M -$824.7K 5 2007-03-22

Recent Filings

73 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 ALNY Grant (A) +671 $0 EDGAR
2025-05-12 ALNY Grant (A) +775 $0 EDGAR
2024-05-20 ALNY Grant (A) — $0 EDGAR
2023-03-09 ALNY Grant (A) — $0 EDGAR
2019-05-23 YIELD10 BIOSCIENCE, INC. (YTEN) Delisted Grant (A) — $0 EDGAR
2019-01-03 YIELD10 BIOSCIENCE, INC. (YTEN) Delisted Grant (A) — $0 EDGAR
2018-10-02 YIELD10 BIOSCIENCE, INC. (YTEN) Delisted Grant (A) — $0 EDGAR
2018-08-01 CELGENE CORP /DE/ (CELGZ) Delisted Grant (A) — $0 EDGAR
2018-07-03 YIELD10 BIOSCIENCE, INC. (YTEN) Delisted Grant (A) — $0 EDGAR
2018-05-25 YIELD10 BIOSCIENCE, INC. (YTEN) Delisted Grant (A) — $0 EDGAR
Showing 1–10 of 73
Page 1 of 8
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.