A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 12 filings in this group are Form 4s for American Financial Group, Inc.
The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.
Across the 12 insider filings shown, the breakdown is 6 open-market sale, 5 compensation award and 1 other reported transaction. 6 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.
Form 4
Other reported transaction
Tax / Compensation Filing
2026-09-18
AFG insider Form 4 filed for equity award, exercise, or tax withholding
Thompson David Lawrence Jr (Director, President of Subsidiary) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
J |
Other transaction
|
30,363 |
— |
— |
J |
Other transaction
|
119,914 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Thompson David Lawrence Jr (Director, President of Subsidiary)
Shares: 150,277
Form 4
Open-market sale
Insider Selling
2026-09-14
AFG insider VON LEHMAN JOHN I (Director) sold 1,279 shares (~$184.0K)
VON LEHMAN JOHN I, listed as Director at AMERICAN FINANCIAL GROUP INC, reported an open-market sale of 1,279 AFG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
1,279 |
$143.84 |
$184.0K |
Filing: Form 4 (Insider Transaction)
Insider: VON LEHMAN JOHN I (Director)
Shares: 1,279
Est. Value: $184.0K
Form 4
Open-market sale
Insider Selling
2026-09-02
AFG insider Hertzman Brian S. (SVP, CFO) sold 950 shares (~$135.7K)
Hertzman Brian S., listed as SVP, CFO at AMERICAN FINANCIAL GROUP INC, reported an open-market sale of 950 AFG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
950 |
$142.87 |
$135.7K |
Filing: Form 4 (Insider Transaction)
Insider: Hertzman Brian S. (SVP, CFO)
Shares: 950
Est. Value: $135.7K
Form 4
Open-market sale
Insider Selling
2026-08-26
AFG insider LINDNER CARL H III (Director, Co-CEO) sold 90,000 shares (~$12.99M)
LINDNER CARL H III, listed as Director, Co-CEO at AMERICAN FINANCIAL GROUP INC, reported an open-market sale of 90,000 AFG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
8,627 |
$144.66 |
$1.25M |
S |
Open-market sale
|
81,373 |
$144.28 |
$11.74M |
Filing: Form 4 (Insider Transaction)
Insider: LINDNER CARL H III (Director, Co-CEO)
Shares: 90,000
Est. Value: $12.99M
Form 4
Open-market sale
Insider Selling
2026-08-07
AFG insider Weiss Mark A (Sr. VP & General Counsel) sold 2,813 shares (~$407.2K)
Weiss Mark A, listed as Sr. VP & General Counsel at AMERICAN FINANCIAL GROUP INC, reported an open-market sale of 2,813 AFG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
2,813 |
$144.76 |
$407.2K |
Filing: Form 4 (Insider Transaction)
Insider: Weiss Mark A (Sr. VP & General Counsel)
Shares: 2,813
Est. Value: $407.2K
Form 4
Open-market sale
Insider Selling
2026-06-25
AFG insider Gillis Michelle A (Senior Vice President) sold 2,247 shares (~$312.3K)
Gillis Michelle A, listed as Senior Vice President at AMERICAN FINANCIAL GROUP INC, reported an open-market sale of 2,247 AFG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
2,247 |
$139.00 |
$312.3K |
Filing: Form 4 (Insider Transaction)
Insider: Gillis Michelle A (Senior Vice President)
Shares: 2,247
Est. Value: $312.3K
Form 4
Open-market sale
Insider Selling
2026-06-24
AFG insider Thompson David Lawrence Jr (Director, President of Subsidiary) sold 11,370 shares (~$1.54M)
Thompson David Lawrence Jr, listed as Director, President of Subsidiary at AMERICAN FINANCIAL GROUP INC, reported an open-market sale of 11,370 AFG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
11,370 |
$135.05 |
$1.54M |
Filing: Form 4 (Insider Transaction)
Insider: Thompson David Lawrence Jr (Director, President of Subsidiary)
Shares: 11,370
Est. Value: $1.54M
Form 4
Compensation award
Tax / Compensation Filing
2026-06-02
AFG insider Form 4 filed for equity award, exercise, or tax withholding
Nwankwo Evans N (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
|
1,299 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Nwankwo Evans N (Director)
Shares: 1,299
Form 4
Compensation award
Tax / Compensation Filing
2026-06-02
AFG insider Form 4 filed for equity award, exercise, or tax withholding
Newport Roger K (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
|
1,299 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Newport Roger K (Director)
Shares: 1,299
Form 4
Compensation award
Tax / Compensation Filing
2026-06-02
AFG insider Form 4 filed for equity award, exercise, or tax withholding
Murray Amy Y (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
|
1,299 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Murray Amy Y (Director)
Shares: 1,299
Form 4
Compensation award
Tax / Compensation Filing
2026-06-02
AFG insider Form 4 filed for equity award, exercise, or tax withholding
Martin Mary Beth (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
|
1,299 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Martin Mary Beth (Director)
Shares: 1,299
Form 4
Compensation award
Tax / Compensation Filing
2026-06-02
AFG insider Form 4 filed for equity award, exercise, or tax withholding
VERITY WILLIAM W (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
|
1,299 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: VERITY WILLIAM W (Director)
Shares: 1,299