Security key
050473107
AUBURN NATIONAL BANCORPORATION, INC - Common Stock, par value $0.01 (AUBN)
CUSIP: 050473107
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, par value $0.01
- Total 13F shares
- 425,606
- Total 13F value
- $11,470,242
- Share change
- +8,984
- SEC-reported price per share
- $26.95
- Number of holders
- 23
- Value change
- +$239,873
- Number of buys
- 9
- Number of sells
- 7
- Shares outstanding
- 3,489,417
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
23
Top holders
10
AUBN full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
AUBURN NATIONAL BANCORPORATION, INC SEC filings
AUBURN NATIONAL BANCORPORATION, INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 050473107
Recent filing periods:
Ownership snapshot
Top reported holders of AUBN - AUBURN NATIONAL BANCORPORATION, INC - Common Stock, par value $0.01 (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Anne M. May
Disclosed value leader
Anne M. May
Comparable rows
15/15
Latest evidence
31 Dec 2025
3/4/5
13D/G
13F
Lead comparable stake: 8.3%
13D/G row: Anne M. May
Showing 1-6 of 15 holder rows.
Quick read
Anne M. May leads the comparable SEC ownership view at 8.3%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Anne M. May's linked filing trail.
Comparable ownership
Top 5
Anne M. May
8.3%
Sandra J. Spencer
7.4%
Bruce Steven Spencer
7.2%
Robert W. Dumas
1.3%
Michael A. Lawler
0.09%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Anne M. May |
3/4/5
13D/G
Director
|
8.3%
from 13D/G
|
$12,278,061
511,160 shares
|
— | 11 Sep 2025 |
| Sandra J. Spencer |
3/4/5
13D/G
Director
|
7.4%
from 13D/G
|
$6,837,584
258,217 shares
|
— | 31 Dec 2025 |
| Bruce Steven Spencer |
13D/G
|
7.2%
|
$6,034,737
251,238 shares
|
$0 | 11 Sep 2025 |
| Robert W. Dumas |
3/4/5
Chairman, Director
|
1.3%
|
$1,178,412
44,502 shares
|
— | 31 Dec 2025 |
| Michael A. Lawler |
3/4/5
Director
|
0.09%
|
$59,679
3,000 shares
|
— | 28 Apr 2025 |
| VANGUARD GROUP INC |
13F
Company
|
2.2%
|
$2,089,774
77,085 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
23
Shares
425,606
Rows available
23
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
24
Q4 2025 holders
23
Holder diff
-1
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend