$AUBN

$25.54 -$1.14 (4.27%) Close

$AUBN Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 3.5M shares outstanding

Who owns AUBN?

By type of holder

Institutions 11.2% Insiders 3.4% Everyone else 85.5%

Concentration Top 10 holders own 30.5%

Anne M. May 8.3% · Sandra J. Spencer 7.4%

Institutional ownership

11.2%

-0.3 pts vs last qtr

Institutional holders

+3 vs last qtr

Net shares bought

−8.7K

by institutions in Q2 2026

New / sold out

4 / 1

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Fourthstone LLC NEW +17.8K
BlackRock, Inc. +2.4K

Biggest sellers in Q2 2026

Vanguard Capital Management LLC −14.1K
M3F, Inc. SOLD OUT −9.2K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Auburn National Bancorporation Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2024–FY2025

+0.0%

+0.04% a year

Each share's claim on the business

−0.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $62K

over 2 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years54% 3–5 years0% 1–3 years37% Under 1 year10%

Quarterly turnover

6.8%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting AUBN on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
LF LPL Financial LLC	50.6K	1.45%	Unchanged	2024	0.0%
Shares held by quarter Peak holding51.6K (Q4'25) Change over 8 quarters+50.6K Share of the company1.450% LPL Financial LLC's full portfolio →
TH Truffle Hound Capital, LLC	50.0K	1.44%	Unchanged	2025	0.3%
Shares held by quarter Peak holding50.0K (Q4'25) Change over 8 quarters+50.0K Share of the company1.440% Truffle Hound Capital, LLC's full portfolio →

LPL Financial LLC

50.6K

% of company

1.45%

Change vs last qtr

Unchanged

Held since

2024

Truffle Hound Capital, LLC

50.0K

% of company

1.44%

Change vs last qtr

Unchanged

Held since

2025

24 more super investors behind a free account

See every manager holding Auburn National Bancorporation Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting AUBN on Form N-PORT; together they hold 4.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$688K	25.4K	0.73%	0.00%	June 30, 2026
EB EA Bridgeway Omni Small-Cap Value ETF EA Series Trust	$479K	17.7K	0.51%	0.02%	June 30, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$688K

% of company

0.73%

% of the fund

0.00%

As of

June 30, 2026

EA Bridgeway Omni Small-Cap Value ETF

EA Series Trust

Position value

$479K

% of company

0.51%

% of the fund

0.02%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Auburn National Bancorporation Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
AM Anne M. May 5%+ holder 13D · 8.3%	288.9K	8.29%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company8.290% Disclosed stake13D · 8.3% View the 13D/G filing →
SJ Sandra J. Spencer 5%+ holder 13D · 7.4%	258.2K	7.41%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company7.410% Disclosed stake13D · 7.4% View the 13D/G filing →

Anne M. May

5%+ holder13D · 8.3%

288.9K

% of company

8.29%

Change vs last qtr

—

Held since

—

Sandra J. Spencer

5%+ holder13D · 7.4%

258.2K

% of company

7.41%

Change vs last qtr

—

Held since

—

10 more holders behind a free account

See every insider and 5%+ holder of Auburn National Bancorporation Inc.

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