RUMMLER WENDY A (Senior VP, Human Resources) sold 9.3% of their position (1.99K shares) of CREDIT ACCEPTANCE CORP on the open market

Open‑market sale worth $1.10M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 5 sales

RUMMLER WENDY A

Filed: 5/20/2026ACC: 0000885550-26-000108

InsiderRUMMLER WENDY ACIK 1916755

→

IssuerCREDIT ACCEPTANCE CORPCIK 885550

Officer· Senior VP, Human Resources

Since Mar 2022

-1.99K

Net shares

Net seller

$1.10M

Total sold

Open market trades

0B · 5S

Total transactions

1.99K acquired · 3.99K disposed

Non-Derivative Transactions6

Common Stock

Direct

M · Option Exercise

+1.99K

Price / share

$333.94

Trade value

$665.88K

% of position

10.2%

5/18/2026

19.55K→21.54K

Common Stock

Direct

S · Sale

−751.00

Price / share

$550.28

Trade value

$413.26K

% of position

3.5%

5/18/2026

21.54K→20.79K

Common Stock

Direct

S · Sale

−231.00

Price / share

$551.29

Trade value

$127.35K

% of position

1.1%

5/18/2026

20.79K→20.56K

Common Stock

Direct

S · Sale

−518.00

Price / share

$552.85

Trade value

$286.38K

% of position

2.5%

5/18/2026

20.56K→20.04K

Common Stock

Direct

S · Sale

−440.00

Price / share

$554.16

Trade value

$243.83K

% of position

2.2%

5/18/2026

20.04K→19.60K

Common Stock

Direct

S · Sale

−54.00

Price / share

$554.96

Trade value

$29.97K

% of position

0.3%

5/18/2026

19.60K→19.55K

Total

Net shares

+0.00

Net value

-$434.91K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	5/18/2026	M · Option Exercise	+1.99K	$333.94	$665.88K	10.2%	19.55K	21.54K
Common Stock Direct	5/18/2026	S · Sale	−751.00	$550.28	$413.26K	3.5%	21.54K	20.79K
Common Stock Direct	5/18/2026	S · Sale	−231.00	$551.29	$127.35K	1.1%	20.79K	20.56K
Common Stock Direct	5/18/2026	S · Sale	−518.00	$552.85	$286.38K	2.5%	20.56K	20.04K
Common Stock Direct	5/18/2026	S · Sale	−440.00	$554.16	$243.83K	2.2%	20.04K	19.60K
Common Stock Direct	5/18/2026	S · Sale	−54.00	$554.96	$29.97K	0.3%	19.60K	19.55K
Total			+0.00		-$434.91K

Derivative Transactions1

Employee Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Common Stock

1.99K shares

−1.99K

Strike price

333.94

Held after

0.00

Exercisable

—

5/18/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Employee Stock Option (right to buy) Direct	Common Stock1.99K shares	5/18/2026	M · Option Exercise	−1.99K	333.94	—	0.00

Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect

Shares owned2.70K

Common Stock

Indirect

Shares owned2.37K

Total

5.07K indirect5.07K

Security Title	Shares Owned	Ownership Type
Common Stock	2.70K	Indirect
Common Stock	2.37K	Indirect
Total	5.07K	5.07K indirect

Derivative Holdings (Post-Transaction)2

Employee Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

1.25K

Shares owned

1.25K

Exercise price

390.39

Expiration

—

Exercise window

—

Employee Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

10K

Shares owned

10K

Exercise price

468.67

Expiration

—

Exercise window

—

Total

Underlying

11.25K

Owned

11.25K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Employee Stock Option (right to buy) Direct	Common Stock	390.39	—	—	1.25K	1.25K
Employee Stock Option (right to buy) Direct	Common Stock	468.67	—	—	10K	10K
Total					11.25K	11.25K