Brian S. Hertzman

CIK 1816887 · SVP, CFO · last filed 2026-09-02

Brian S. Hertzman is a SVP, CFO who has filed 21 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing shows the insider sold $135.7K of AFG on Sep 2, 2026. Across all open-market trades the lifetime net is −$1.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.4M across reported positions. 28 SEC filings were submitted jointly with AMERICAN FINANCIAL GROUP INC.

"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.

Disclosed Exposure

$2.38M

Companies

2

Total Filings

21

Lifetime Open-Market Net

-$1.78M

Filer Profile

Reported Address

301 EAST FOURTH STREET
CINCINNATI, OH 45202

Related Filers

AMERICAN FINANCIAL GROUP INC — 28 joint filings, latest 2026-09-02

Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
AFG	SVP, CFO	15,078	$138.22	$2.08M	-$135.7K	1	2026-09-02
AFGE	SVP, CFO	17,691	$16.95	$299.9K	-$1.64M	16	2026-03-02

Recent Filings

21 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
2026-09-02	AFG	Sell (S)	−950	-$135.7K	EDGAR
2026-09-01	AFG	Notice (144)	−950	-$135.4K	EDGAR
2026-03-02	AFGE	Mixed	+1,500	-$222.3K	EDGAR
2026-02-27	AFG	Notice (144)	−1,663	-$222.2K	EDGAR
2026-02-24	AFGE	Tax (F)	−727	-$94.4K	EDGAR
2025-11-10	AFGE	Sell (S)	−1,777	-$253.2K	EDGAR
2025-11-07	AFG	Notice (144)	−1,777	-$251.3K	EDGAR
2025-02-25	AFGE	Tax (F)	−788	-$94.7K	EDGAR
2025-02-21	AFGE	Grant (A)	+3,282	$0	EDGAR
2024-02-28	AFGE	Mixed	+2,102	-$135.5K	EDGAR

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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.