AUBURN NATIONAL BANCORPORATION, INC

The Company’s repurchases of its common

stock during the second quarter of 2026 were as follows:

Period

Total Number of

Shares Purchased

Average Price

Paid per Share

Total Number of

Shares Purchased as

Part of Publicly

Announced Plans or

Programs

Approximate Dollar

Value

of Shares that

May Yet

Be

Purchased Under the

Plans or Programs (1)

April 1 - April 30, 2026

—

—

—

$

5,000,000

May 1 - May 31, 2026

7,058

$

24.04

7,058

4,830,339

June 1 - June 30, 2026

25.11

4,805,778

Total

8,036

$

24.17

8,036

$

4,805,778

(1) On March 17, 2026, the Company announced that its Board of Directors had approved a stock repurchase program authorizing the

repurchase, from time to time, of up to $5.0 million of the Company's issued and outstanding common stock.

The program will remain

in effect until the earliest of (i) the expenditure of $5.0 million on share repurchases, (ii) the termination or replacement of the program,

and (iii) February 28, 2027.

Repurchases may be made through open-market or private purchases, negotiated transactions, block purchases

or otherwise.

The Company is not required to acquire any specific number of shares and may suspend or terminate the program at any

time.

DEFAULTS

UPON SENIOR SECURITIES