NSTS Bancorp, Inc. - Common Stock, $0.01 par value per share (NSTS) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2022 to Q4 2025

Type / Class
Equity / Common Stock, $0.01 par value per share
Symbol
NSTS on Nasdaq
Shares outstanding
5,311,593
Price per share
$12.56
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
1,172,201
Total reported value
$15,179,878
% of total 13F portfolios
0%
Share change
+20,531
Value change
+$357,002
Number of holders
19
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of NSTS Bancorp, Inc. - Common Stock, $0.01 par value per share (NSTS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
ALLIANCEBERNSTEIN L.P. 9.7% $5,813,244 514,902 AllianceBernstein L.P. 30 Sep 2024
NORTH SHORE TRUST & SAVINGS EMPLOYEE STOCK OWNERSHIP PLAN TRUST 8.1% $4,857,398 430,239 NORTH SHORE TRUST & SAVINGS EMPLOYEE STOCK OWNERSHIP PLAN TRUST 31 Dec 2024

As of 31 Dec 2025, 19 institutional investors reported holding 1,172,201 shares of NSTS Bancorp, Inc. - Common Stock, $0.01 par value per share (NSTS). This represents 22% of the company’s total 5,311,593 outstanding shares.

Top 22 Institutional Shareholders

The largest institutional shareholders of NSTS Bancorp, Inc. - Common Stock, $0.01 par value per share (NSTS) together control 22% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
ALLIANCEBERNSTEIN L.P. 9.7% 513,250 -0.98% 0% $6,646,588
VANGUARD GROUP INC 4.1% 217,964 -12% 0% $2,822,634
RAFFLES ASSOCIATES LP 1.8% 93,774 0% 0.91% $1,214,373
GRAHAM CAPITAL WEALTH MANAGEMENT, LLC 1.3% 69,535 0.83% $900,478
Focus Partners Wealth 1.1% 60,733 0% $786,492
GEODE CAPITAL MANAGEMENT, LLC 0.85% 45,383 -2.6% 0% $587,882
Creative Planning 0.85% 45,000 0% 0% $582,750
ROBERTS GLORE & CO INC /IL/ 0.69% 36,496 0% 0.13% $472,623
M3F, Inc. 0.5% 26,664 -30% 0.09% $345,000
NORTHERN TRUST CORP 0.4% 21,325 -4% 0% $276,159
RENAISSANCE TECHNOLOGIES LLC 0.33% 17,497 +22% 0% $226,586
BlackRock, Inc. 0.22% 11,857 +1.4% 0% $153,548
STATE STREET CORP 0.21% 11,205 0% 0% $145,105
American Capital Advisory, LLC 0.02% 850 0% 0% $11,008
HARBOUR INVESTMENTS, INC. 0.01% 500 0% $6,475
Scarborough Advisors, LLC 0% 150 0% 0% $1,943
Tower Research Capital LLC (TRC) 0% 8 0% $104
UBS Group AG 0% 6 0% $78
BANK OF AMERICA CORP /DE/ 0% 4 0% 0% $52
BARCLAYS PLC 0% 0 -100% $0
Kovitz Investment Group Partners, LLC 0% 0 -100% $0
Composition Wealth, LLC 0% 0 -100% $0

Institutional Holders of NSTS Bancorp, Inc. - Common Stock, $0.01 par value per share (NSTS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 1,172,201 $15,179,878 +$357,002 $12.95 19
2025 Q3 1,151,670 $13,336,693 +$38,497 $11.54 17
2025 Q2 1,148,355 $14,152,557 +$150,853 $12.33 17
2025 Q1 1,136,039 $12,826,161 +$50,674 $11.29 15
2024 Q4 1,171,526 $13,753,465 +$1,120,768 $11.80 18
2024 Q3 1,035,876 $10,721,449 +$975,531 $10.35 12
2024 Q2 942,226 $9,074,140 +$285,457 $9.63 15
2024 Q1 912,975 $8,709,103 +$829,432 $9.54 14
2023 Q4 827,201 $7,861,933 +$148,081 $9.51 17
2023 Q3 810,721 $7,336,526 +$2,003,341 $9.05 14
2023 Q2 589,360 $5,395,421 +$826,951 $9.14 16
2023 Q1 501,063 $4,554,464 +$30,097 $9.09 15
2022 Q4 497,403 $5,038,102 +$471,496 $10.13 18
2022 Q3 450,856 $4,877,000 +$100,292 $10.82 12
2022 Q2 441,544 $4,930,000 -$130,515 $11.18 12
2022 Q1 449,503 $5,428,000 +$5,428,000 $12.07 13