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John T Herron

CIK 1478475 · President & CEO, Nuc Ops/CNO · last filed 2026-05-11

John T Herron is a President & CEO, Nuc Ops/CNO who has filed 34 SEC Form 4 insider transactions across 3 companies since 2010. The most recent filing shows the insider was granted $200.0K of DUK on May 11, 2026. Across all open-market trades the lifetime net is −$678.1K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.9M 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

$6.93M

Companies

3

Total Filings

34

Lifetime Open-Market Net

-$678.1K

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
DUK Director 34,525 $120.39 $4.16M $0 12 2026-05-11
DUKH Director 17,280 $23.73 $410.0K $389.3K 8 2019-03-15
ETR President & CEO, Nuc Ops/CNO 22,082 $107.02 $2.36M -$1.07M 14 2012-12-18

Recent Filings

34 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
2026-05-11 DUK Grant (A) +1,602 $200.0K EDGAR
2025-08-12 DUK Gift (G) −1,200 $0 EDGAR
2025-05-05 DUK Grant (A) +1,607 $195.0K EDGAR
2024-05-22 DUK Gift (G) −2,297 $0 EDGAR
2024-05-13 DUK Grant (A) +1,698 $175.0K EDGAR
2023-05-08 DUK Grant (A) +1,783 $175.0K EDGAR
2022-05-23 DUK Gift (G) −600 $0 EDGAR
2022-05-09 DUK Grant (A) +1,590 $175.0K EDGAR
2021-05-10 DUK Grant (A) +1,591 $160.0K EDGAR
2020-05-22 DUK Gift (G) −600 $0 EDGAR
Showing 1–10 of 34
Page 1 of 4
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.