SEC Form 4
American Financial Group, Inc. (AFG) insider trading
In the 12 months to Oct 24, 2026, 6 AFG insiders reported open-market sales of $16.0M across 8 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $16.0M
- 8 filings · 6 insiders
- Open-market purchases
- $0
- 0 filings
Who traded AFG, and when
- Sale
AFG daily close from Oct 24, 2025 to Oct 23, 2026, between $124.18 and $153.46, last $150.62. 8 sale and 0 purchase filings by 6 insiders, marked at their filing dates. Carl H. Lindner III, Co-CEO: sold $13.0M across 1 filing, first filed Aug 26, 2026, last Aug 26, 2026. David Lawrence Thompson Jr., President of Subsidiary: sold $1.5M across 1 filing, first filed Jun 24, 2026, last Jun 24, 2026. Brian S. Hertzman, SVP, CFO: sold $611.3K across 3 filings, first filed Nov 10, 2025, last Sep 2, 2026. Mark A. Weiss, Sr. VP & General Counsel: sold $407.2K across 1 filing, first filed Aug 7, 2026, last Aug 7, 2026. Michelle A. Gillis, Senior Vice President: sold $312.3K across 1 filing, first filed Jun 25, 2026, last Jun 25, 2026. Lehman John I. Von, Director: sold $184.0K across 1 filing, first filed Sep 14, 2026, last Sep 14, 2026.
Largest mark · tap a row for others
Carl H. Lindner III · Co-CEO
Sale $12,988,604
90,000 shares at $144.32 avg
Filed Aug 26, 2026 · traded Aug 24
Close on filing date $144.97
Carl H. Lindner III · Co-CEO
Co-CEO
$13.0M soldDavid Lawrence Thompson Jr. · President of Subsidiary
President of Subsidiary
$1.5M soldBrian S. Hertzman · SVP, CFO
SVP, CFO
$611.3K soldMark A. Weiss · Sr. VP & General Counsel
Sr. VP & General Counsel
$407.2K soldMichelle A. Gillis · Senior Vice President
Senior Vice President
$312.3K soldLehman John I. Von · Director
Director
$184.0K soldHas American Financial Group, Inc.'s CEO sold stock?
Yes. Carl H. Lindner III (CEO) sold 90,000 shares ($13.0M) in Aug 2026. S. Craig Lindner (CEO) made no open-market sales filed as CEO in the last 12 months.
Open-market trades
8 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Carl H. Lindner III | Co-CEO | $13.0M | — | 1 | — | |
| David Lawrence Thompson Jr. | President of Subsidiary | $1.5M | — | 1 | — | |
| Brian S. Hertzman | SVP, CFO | $611.3K | — | 3 | — | |
| Mark A. Weiss | Sr. VP & General Counsel | $407.2K | — | 1 | — | |
| Michelle A. Gillis | Senior Vice President | $312.3K | — | 1 | — | |
| Lehman John I. Von | Director | $184.0K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Lehman John I. Von Director | Sale | 1,279 | $143.84 | $184.0K | 12,483 | |
traded | Brian S. Hertzman SVP, CFO | Sale | 950 | $142.87 | $135.7K | 11,123 | |
traded | Carl H. Lindner III Co-CEO | Sale | 90,000 | $144.32 | $13.0M | 3,060,068 | |
traded | Mark A. Weiss Sr. VP & General Counsel | Sale | 2,813 | $144.76 | $407.2K | 6,648 | |
traded | Michelle A. Gillis Senior Vice President | Sale | 2,247 | $139.00 | $312.3K | 13,135 | |
traded | David Lawrence Thompson Jr. President of Subsidiary | Sale | 11,370 | $135.05 | $1.5M | 584,098 | |
traded | Brian S. Hertzman SVP, CFO | Sale | 1,663 | $133.70 | $222.3K | 12,073 | |
traded | Brian S. Hertzman SVP, CFO | Sale | 1,777 | $142.51 | $253.2K | 11,300 |
GET /stocks/filings/vX/form-4?tickers=AFG&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"AFG",
"AFGB",
"AFGC",
"AFGD",
"AFGE"
],
"issuer_cik": "0001042046",
"owner_cik": "0001105805",
"accession_number": "0001193125-26-390735",
"form_type": "4",
"filing_date": "2026-09-14",
"period_of_report": "2026-09-14",
"issuer_name": "AMERICAN FINANCIAL GROUP INC",
"issuer_trading_symbol": "AFG",
"owner_name": "VON LEHMAN JOHN I",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-14",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1279,
"transaction_price_per_share": 143.84,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 12483,
"transaction_value": 183971.36000000002,
"direct_or_indirect": "D"
},
{
"tickers": [
"AFG",
"AFGB",
"AFGC",
"AFGD",
"AFGE"
],
"issuer_cik": "0001042046",
"owner_cik": "0001816887",
"accession_number": "0001193125-26-380354",
"form_type": "4",
"filing_date": "2026-09-02",
"period_of_report": "2026-09-02",
"issuer_name": "AMERICAN FINANCIAL GROUP INC",
"issuer_trading_symbol": "AFG",
"owner_name": "Hertzman Brian S.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "SVP, CFO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-02",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 950,
"transaction_price_per_share": 142.87,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 11123,
"transaction_value": 135726.5,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 39 records
- Tax withholding8 records
- Grants and awards15 records
- Gifts14 records
- Other2 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for AFG every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.