Matthew K Durkee
CIK 1707871 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 11, 2021 · Latest: March 19, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 9 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.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 17, 2026 | CBU | A | 5,537 | — | — | 5,537 Direct | — | Acquired | (price as of 2026-08-20) |
| March 17, 2026 | CBU | A | 1,449 | — | — | 1,449 Direct | — | Acquired | (price as of 2026-08-20) |
| March 2, 2026 | CBU | F | 399 | $60.55 | $24,159 | 2,858 Direct | -12.25% | Disposed | 3.3% (price as of 2026-08-20) |
| Jan. 15, 2020 | NBTB | F | 87 | $40.44 | $3,518 | 31,471 Direct | -0.28% | Disposed | 27.2% (price as of 2026-08-20) |
| Jan. 15, 2020 | NBTB | F | 165 | $40.44 | $6,673 | 31,558 Direct | -0.52% | Disposed | 27.2% (price as of 2026-08-20) |
| Jan. 15, 2020 | NBTB | F | 959 | $40.44 | $38,782 | 31,723 Direct | -2.93% | Disposed | 27.2% (price as of 2026-08-20) |
| Jan. 15, 2020 | NBTB | F | 167 | $40.44 | $6,753 | 32,682 Direct | -0.51% | Disposed | 27.2% (price as of 2026-08-20) |
| Jan. 15, 2020 | NBTB | F | 198 | $40.44 | $8,007 | 32,849 Direct | -0.60% | Disposed | 27.2% (price as of 2026-08-20) |
| Jan. 15, 2020 | NBTB | F | 51 | $40.44 | $2,062 | 33,047 Direct | -0.15% | Disposed | 27.2% (price as of 2026-08-20) |
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.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 17, 2026 | CBU | Stock Option | Common Stock (5,537) | $56.64 | March 17, 2036 | 5,537 | Acquired |
| March 17, 2026 | CBU | Restricted Stock Units | Common Stock (1,449) | — | — | 1,449 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 8 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 23, 2026 | CBU | Common Stock | 3,257 | Direct |
| Feb. 23, 2026 | CBU | Common Stock | 9,620 | Indirect |
| Feb. 23, 2026 | CBU | Stock Option→ Common Stock (2,496) | 2,496 | Direct |
| Feb. 23, 2026 | CBU | Stock Option→ Common Stock (5,451) | 5,451 | Direct |
| Feb. 23, 2026 | CBU | Stock Option→ Common Stock (4,474) | 4,474 | Direct |
| June 2, 2017 | NBTB | NBT Bancorp Inc. Common Stock | 2,647 | Indirect |
| June 2, 2017 | NBTB | NBT Bancorp Inc. Common Stock | 25,173 | Direct |
| June 2, 2017 | NBTB | NBT Bancorp Inc. Common Stock | 520 | Indirect |