Ames National Corporation
Ames National Corporation (ATLO) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ATLO · as of Sep 30, 2025
Ownership Breakdown
79
Institutional Holders
▲ 9 vs Q2
$58.66M
Total Inst. Value
▲ $10.27M vs Q2
8.86M
Shares Outstanding
freeFloat 98.01%
2.90M
13F Shares Held
▲ 184,216 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ATLO largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. national commercial banks | 622.5K | 6.98% | 6.98% | $12.59B | Nov 12, 2025 | ▼ 26.7K |
VANGUARD GROUP INC national commercial banks | 508.8K | 5.71% | 5.71% | $10.29B | Nov 7, 2025 | ▲ 5.1K |
DIMENSIONAL FUND ADVISORS LP national commercial banks | 257.7K | 2.89% | 2.89% | $5.21B | Nov 12, 2025 | ▼ 2.9K |
FOURTHSTONE LLC national commercial banks | 225.1K | 2.52% | 2.52% | $4.55B | Nov 14, 2025 | ▲ 125.3K |
GEODE CAPITAL MANAGEMENT, LLC national commercial banks | 214.8K | 2.41% | 2.41% | $4.34B | Nov 12, 2025 | ▼ 339 |
STATE STREET CORP national commercial banks | 125.5K | 1.41% | 1.41% | $2.54B | Nov 14, 2025 | ▼ 925 |
ELIZABETH PARK CAPITAL ADVISORS, LTD. national commercial banks | 107.4K | 1.20% | 1.20% | $2.17B | Nov 13, 2025 | — held |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP national commercial banks | 91.7K | 1.03% | 1.03% | $1.85B | Nov 13, 2025 | — held |
AMES NATIONAL CORP national commercial banks | 89.1K | 99.87% | 99.87% | $1.80B | Nov 12, 2025 | ▲ 37.5K |
NORTHERN TRUST CORP national commercial banks | 72.3K | 81.13% | 81.13% | $1.46B | Nov 14, 2025 | ▲ 1.4K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
22
Increased
+198.0K shares4
New Positions
first time holders12
Decreased
−93.4K shares0
Sold Out
fully exitedNet shares change (top 50)
+104.6K
+198.0K / −93.4K
Net new holders
+14
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ATLO insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
4
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Cassabaum Michelle R director | May 29, 2026 | Purchase | 170 | $28.83 | $4.9K | 10.0K | Form 4 ↗ |
Hagan Patrick G director | May 15, 2026 | Purchase | 200 | $27.69 | $5.5K | 9.6K | Form 4 ↗ |
Hagan Patrick G director | May 12, 2026 | Purchase | 100 | $27.65 | $2.8K | 9.4K | Form 4 ↗ |
Cassabaum Michelle R director | Apr 30, 2026 | Purchase | 84 | $28.08 | $2.4K | 9.8K | Form 4 ↗ |
Cassabaum Michelle R director | Feb 27, 2026 | Purchase | 205 | $27.25 | $5.6K | 9.7K | Form 4 ↗ |
Cassabaum Michelle R director | Jan 30, 2026 | Purchase | 280 | $26.11 | $7.3K | 9.2K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Ames National Corporation (ATLO) is primarily owned by institutional investors, who hold approximately 32.8% of total shares outstanding. Company insiders own approximately 1.99%, while retail and public investors account for the remaining 65.26%.
The largest institutional shareholder of Ames National Corporation is BLACKROCK, INC., holding approximately 622,511 shares — equal to 6.98% of outstanding shares — as of September 30, 2025.
A total of 79 institutional investors currently hold ATLO stock, with a combined institutional value of approximately $58,660,806 as of the most recent 13F filing period.
Frequently asked questions
ATLO ownershipAmes National Corporation (ATLO) is primarily owned by institutional investors, who hold approximately 32.8% of shares. The largest shareholder is BLACKROCK, INC. with a 6.98% stake. Company insiders hold 1.99%. Data sourced from SEC Form 13F as of September 30, 2025.