Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 50 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
March 18, 2025 CBU A 5,647 · · 5,647 Direct · Acquired (price as of 2026-10-02)
March 18, 2025 CBU A 1,529 · · 15,880 Direct +10.65% Acquired (price as of 2026-10-02)
March 18, 2025 CBU A 1,529 · · 1,529 Direct · Acquired (price as of 2026-10-02)
March 18, 2025 CBU A 5,647 · · 19,998 Direct +39.35% Acquired (price as of 2026-10-02)
March 12, 2025 CBU F 693 · · 14,351 Direct -4.61% Disposed (price as of 2026-10-02)
March 7, 2025 CBU A 1,922 · · 15,044 Direct +14.65% Acquired (price as of 2026-10-02)
March 3, 2025 CBU F 798 $63.29 $50,505 13,122 Direct -5.73% Disposed -4.1% (price as of 2026-10-02)
Nov. 26, 2024 CBU M 2,524 · · 4,382 Direct -36.55% Disposed (price as of 2026-10-02)
Nov. 26, 2024 CBU M 1,559 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Nov. 26, 2024 CBU M 1,503 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Nov. 26, 2024 CBU M 2,061 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Nov. 26, 2024 CBU F 6,174 $71.45 $441,132 13,920 Direct -30.73% Disposed -15.1% (price as of 2026-10-02)
Nov. 26, 2024 CBU M 2,524 · · 20,094 Direct +14.37% Acquired (price as of 2026-10-02)
Nov. 26, 2024 CBU M 1,559 · · 17,570 Direct +9.74% Acquired (price as of 2026-10-02)
Nov. 26, 2024 CBU M 1,503 · · 16,011 Direct +10.36% Acquired (price as of 2026-10-02)
Nov. 26, 2024 CBU M 2,061 · · 14,508 Direct +16.56% Acquired (price as of 2026-10-02)
April 30, 2024 CBU I 3,544 $43.22 $153,172 10,314 Indirect +52.35% Acquired 40.4% (price as of 2026-10-02)
March 19, 2024 CBU A 6,929 · · 6,929 Direct · Acquired (price as of 2026-10-02)
March 19, 2024 CBU A 1,933 · · 12,447 Direct +18.39% Acquired (price as of 2026-10-02)
Sept. 12, 2023 CBU I 1,020 $44.13 $45,013 6,104 Indirect +20.06% Acquired 37.5% (price as of 2026-10-02)
Aug. 18, 2023 CBU I 1,009 $48.58 $49,017 5,084 Indirect +24.76% Acquired 24.9% (price as of 2026-10-02)
March 15, 2023 CBU I 1,331 $53.97 $71,834 3,934 Indirect +51.13% Acquired 12.5% (price as of 2026-10-02)
March 14, 2023 CBU A 5,835 · · 5,835 Direct · Acquired (price as of 2026-10-02)
March 14, 2023 CBU A 1,600 · · 10,514 Direct +17.95% Acquired (price as of 2026-10-02)
March 8, 2023 CBU F 536 $61.05 $32,723 8,914 Direct -5.67% Disposed -0.6% (price as of 2026-10-02)
Dec. 2, 2022 CBU M 2,388 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Dec. 2, 2022 CBU F 1,813 $64.91 $117,682 9,450 Direct -16.10% Disposed -6.5% (price as of 2026-10-02)
Dec. 2, 2022 CBU M 2,388 $35.36 $84,440 11,263 Direct +26.91% Acquired 71.6% (price as of 2026-10-02)
March 15, 2022 CBU A 3,494 · · 3,494 Direct · Acquired (price as of 2026-10-02)
March 15, 2022 CBU A 869 · · 8,875 Direct +10.85% Acquired (price as of 2026-10-02)
March 15, 2022 CBU A 3,494 · · 3,494 Direct · Acquired (price as of 2026-10-02)
March 4, 2022 CBU F 432 $72.94 $31,510 8,006 Direct -5.12% Disposed -16.8% (price as of 2026-10-02)
May 19, 2021 CBU M 1,796 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 19, 2021 CBU F 1,279 $79.33 $101,463 8,438 Direct -13.16% Disposed -23.5% (price as of 2026-10-02)
May 19, 2021 CBU M 1,796 $37.77 $67,835 9,717 Direct +22.67% Acquired 60.7% (price as of 2026-10-02)
March 16, 2021 CBU A 4,981 · · 4,981 Direct · Acquired (price as of 2026-10-02)
March 16, 2021 CBU A 1,152 · · 7,921 Direct +17.02% Acquired (price as of 2026-10-02)
March 5, 2021 CBU F 357 $71.19 $25,415 6,769 Direct -5.01% Disposed -14.7% (price as of 2026-10-02)
Feb. 25, 2021 CBU M 3,026 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Feb. 25, 2021 CBU F 2,112 $73.66 $155,570 7,126 Direct -22.86% Disposed -17.6% (price as of 2026-10-02)
Feb. 25, 2021 CBU M 3,026 $29.79 $90,145 9,238 Direct +48.71% Acquired 103.7% (price as of 2026-10-02)
March 17, 2020 CBU A 6,906 · · 6,906 Direct · Acquired (price as of 2026-10-02)
March 17, 2020 CBU A 1,452 · · 6,212 Direct +30.50% Acquired (price as of 2026-10-02)
March 5, 2020 CBU F 205 $60.81 $12,466 4,760 Direct -4.13% Disposed -0.2% (price as of 2026-10-02)
March 3, 2020 CBU F 205 $60.81 $12,466 4,760 Direct -4.13% Disposed -0.2% (price as of 2026-10-02)
March 20, 2019 CBU A 5,147 · · 5,147 Direct · Acquired (price as of 2026-10-02)
March 20, 2019 CBU A 1,242 · · 4,965 Direct +33.36% Acquired (price as of 2026-10-02)
March 1, 2019 CBU F 157 $64.79 $10,172 3,723 Direct -4.05% Disposed -6.3% (price as of 2026-10-02)
Jan. 8, 2019 CBU F 1,169 $60.34 $70,537 3,880 Direct -23.15% Disposed 0.6% (price as of 2026-10-02)
Jan. 8, 2019 CBU A 2,275 · · 5,049 Direct +82.01% Acquired (price as of 2026-10-02)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

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DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
March 18, 2025 CBU Stock Option Common Stock (5,647) $58.10 March 18, 2035 5,647 Acquired
March 18, 2025 CBU Stock Option Common Stock (1,529) $58.10 March 18, 2035 1,529 Acquired
Nov. 26, 2024 CBU Stock Option Common Stock (2,524) $51.64 March 17, 2030 2,524 Disposed
Nov. 26, 2024 CBU Stock Option Common Stock (1,559) $55.92 March 20, 2028 1,559 Disposed
Nov. 26, 2024 CBU Stock Option Common Stock (1,503) $57.12 March 15, 2027 1,503 Disposed
Nov. 26, 2024 CBU Stock Option Common Stock (2,061) $38.02 March 16, 2026 2,061 Disposed
March 19, 2024 CBU Stock Option Common Stock (6,929) $44.27 March 19, 2034 6,929 Acquired
March 14, 2023 CBU Stock Option Common Stock (5,835) $54.06 March 14, 2033 5,835 Acquired
Dec. 2, 2022 CBU Stock Option Common Stock (2,388) $35.36 March 18, 2025 2,388 Disposed
March 15, 2022 CBU Stock Option Common Stock (3,494) · March 15, 2032 3,494 Acquired
March 15, 2022 CBU Stock Option Common Stock (3,494) $72.51 March 15, 2032 3,494 Acquired
May 19, 2021 CBU Stock Option Common Stock (1,796) $37.77 March 19, 2024 1,796 Disposed
March 16, 2021 CBU Stock Option Common Stock (4,981) $79.66 March 16, 2031 4,981 Acquired
Feb. 25, 2021 CBU Stock Option Common Stock (3,026) $29.79 March 19, 2023 3,026 Disposed
March 17, 2020 CBU Stock Option Common Stock (6,906) $51.64 March 17, 2030 6,906 Acquired
March 20, 2019 CBU Stock Option Common Stock (5,147) $59.41 March 20, 2029 5,147 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 8 holdings

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
May 31, 2018 CBU Common Stock 2,774 Direct
May 31, 2018 CBU Common Stock 1,014 Indirect
May 31, 2018 CBU Stock Option→ Common Stock (3,026) 3,026 Direct
May 31, 2018 CBU Stock Option→ Common Stock (2,388) 2,388 Direct
May 31, 2018 CBU Stock Option→ Common Stock (2,296) 2,296 Direct
May 31, 2018 CBU Stock Option→ Common Stock (2,576) 2,576 Direct
May 31, 2018 CBU Stock Option→ Common Stock (1,559) 1,559 Direct
May 31, 2018 CBU Stock Option→ Common Stock (1,503) 1,503 Direct

Compensation (DEF 14A)

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Matched by name from proxy statements (DEF 14A) — verify against the filing.

CBU

EVP
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2018 $299,769 · · · $234,375 $7,955 $27,017 $610,927

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.