NSTS Bancorp, Inc.
NSTS Bancorp, Inc. (NSTS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · NSTS · as of Sep 30, 2025
Ownership Breakdown
17
Institutional Holders
$13.34M
Total Inst. Value
▼ $815,864 vs Q2
5.26M
Shares Outstanding
freeFloat 84.06%
1.15M
13F Shares Held
▲ 3,315 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
NSTS largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
ALLIANCEBERNSTEIN L.P. savings institution, federally chartered | 518.3K | 10.61% | 10.61% | $5.98B | Nov 14, 2025 | ▲ 3.0K |
VANGUARD GROUP INC savings institution, federally chartered | 248.3K | 5.08% | 5.08% | $2.90B | Nov 7, 2025 | — held |
RAFFLES ASSOCIATES LP savings institution, federally chartered | 93.8K | 1.92% | 1.92% | $1.08B | Nov 14, 2025 | — held |
KOVITZ INVESTMENT GROUP PARTNERS, LLC savings institution, federally chartered | 53.5K | 1.10% | 1.10% | $617.77M | Nov 10, 2025 | ▲ 7.0K |
GEODE CAPITAL MANAGEMENT, LLC savings institution, federally chartered | 46.6K | 95.38% | 95.38% | $545.03M | Nov 12, 2025 | ▲ 55 |
CREATIVE PLANNING savings institution, federally chartered | 45.0K | 92.09% | 92.09% | $519.30M | Nov 14, 2025 | — held |
M3F, INC. savings institution, federally chartered | 38.1K | 77.97% | 77.97% | $440.00M | Nov 12, 2025 | — held |
ROBERTS GLORE & CO INC /IL/ savings institution, federally chartered | 36.5K | 74.69% | 74.69% | $421.16M | Nov 12, 2025 | — held |
NORTHERN TRUST CORP savings institution, federally chartered | 22.2K | 45.45% | 45.45% | $256.28M | Nov 14, 2025 | ▼ 2.5K |
RENAISSANCE TECHNOLOGIES LLC savings institution, federally chartered | 14.4K | 29.47% | 29.47% | $166.18M | Nov 13, 2025 | — held |
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
4
Increased
+10.2K shares1
New Positions
first time holders3
Decreased
−6.1K shares1
Sold Out
fully exitedNet shares change (top 50)
+4.1K
+10.2K / −6.1K
Net new holders
+1
1 new / 1 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
NSTS insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
1
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 |
|---|---|---|---|---|---|---|---|
Ansani Emily E. director | Dec 19, 2024 | Award | 23,000 | $11.34 | $260.8K | 23.0K | Form 4 ↗ |
Ansani Emily E. director | Dec 19, 2024 | Award | 9,200 | — | — | 9.2K | Form 4 ↗ |
Ivantic Thomas M director | Aug 12, 2024 | Sale | 530 | $10.06 | $5.3K | 28.7K | Form 4 ↗ |
Schoolcraft Carissa H Chief Financial Officer | Jun 26, 2024 | Tax Withhold | 1,810 | $9.61 | $17.4K | 24.2K | Form 4 ↗ |
Lear Stephen G. Chief Executive Officer | Jun 26, 2024 | Tax Withhold | 3,095 | $9.61 | $29.7K | 62.9K | Form 4 ↗ |
Walker Nathan E Executive Vice President | Jun 26, 2024 | Tax Withhold | 3,324 | $9.61 | $31.9K | 60.7K | Form 4 ↗ |
Avakian Amy L Chief Lending Officer | Jun 26, 2024 | Tax Withhold | 1,155 | $9.61 | $11.1K | 43.8K | Form 4 ↗ |
True Rodney J, director | Jun 15, 2023 | Award | 9,200 | — | — | 39.2K | Form 4 ↗ |
True Rodney J, director | Jun 15, 2023 | Award | 23,000 | $9.36 | $215.3K | 23.0K | Form 4 ↗ |
Arenas Apolonio director | Jun 15, 2023 | Award | 9,200 | — | — | 26.7K | 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
NSTS Bancorp, Inc. (NSTS) is primarily owned by institutional investors, who hold approximately 21.9% of total shares outstanding. Company insiders own approximately 15.94%, while retail and public investors account for the remaining 62.17%.
The largest institutional shareholder of NSTS Bancorp, Inc. is ALLIANCEBERNSTEIN L.P., holding approximately 518,324 shares — equal to 10.61% of outstanding shares — as of September 30, 2025.
A total of 17 institutional investors currently hold NSTS stock, with a combined institutional value of approximately $13,336,693 as of the most recent 13F filing period.
Frequently asked questions
NSTS ownershipNSTS Bancorp, Inc. (NSTS) is primarily owned by institutional investors, who hold approximately 21.9% of shares. The largest shareholder is ALLIANCEBERNSTEIN L.P. with a 10.61% stake. Company insiders hold 15.94%. Data sourced from SEC Form 13F as of September 30, 2025.