Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 19 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
May 7, 2025 NWN I 10b5-1 351 $43.95 $15,426 6,354 Indirect +5.85% Acquired 7.8% (price as of 2026-10-02)
March 3, 2025 NWN I 10b5-1 366 $42.37 $15,507 6,003 Indirect +6.49% Acquired 11.8% (price as of 2026-10-02)
Nov. 20, 2024 NWN I 10b5-1 351 $42.12 $14,784 5,570 Indirect +6.73% Acquired 12.5% (price as of 2026-10-02)
Aug. 5, 2024 NWN I 10b5-1 388 $38.09 $14,779 5,098 Indirect +8.24% Acquired 24.4% (price as of 2026-10-02)
May 7, 2024 NWN I 10b5-1 385 $38.37 $14,772 4,656 Indirect +9.01% Acquired 23.5% (price as of 2026-10-02)
Feb. 26, 2024 NWN I 10b5-1 405 $36.60 $14,823 4,271 Indirect +10.48% Acquired 29.5% (price as of 2026-10-02)
Nov. 6, 2023 NWN I 10b5-1 355 $37.75 $13,401 3,770 Indirect +10.40% Acquired 25.5% (price as of 2026-10-02)
Aug. 4, 2023 NWN I 10b5-1 334 $41.33 $13,804 3,378 Indirect +10.97% Acquired 14.6% (price as of 2026-10-02)
May 5, 2023 NWN I 10b5-1 285 $47.05 $13,409 3,015 Indirect +10.44% Acquired 0.7% (price as of 2026-10-02)
Feb. 27, 2023 NWN I 290 $47.75 $13,848 2,730 Indirect +11.89% Acquired -0.8% (price as of 2026-10-02)
Nov. 9, 2022 NWN I 295 $45.40 $13,393 2,395 Indirect +14.05% Acquired 4.4% (price as of 2026-10-02)
Aug. 5, 2022 NWN I 255 $52.56 $13,403 2,083 Indirect +13.95% Acquired -9.9% (price as of 2026-10-02)
May 5, 2022 NWN I 273 $49.02 $13,382 1,814 Indirect +17.72% Acquired -3.3% (price as of 2026-10-02)
Feb. 28, 2022 NWN I 265 $52.01 $13,783 1,541 Indirect +20.77% Acquired -8.9% (price as of 2026-10-02)
Nov. 8, 2021 NWN I 272 $45.73 $12,439 1,252 Indirect +27.76% Acquired 3.6% (price as of 2026-10-02)
Aug. 6, 2021 NWN I 224 $53.43 $11,968 974 Indirect +29.87% Acquired -11.3% (price as of 2026-10-02)
May 6, 2021 NWN I 219 $54.67 $11,973 745 Indirect +41.63% Acquired -13.3% (price as of 2026-10-02)
March 1, 2021 NWN I 249 $48.25 $12,014 525 Indirect +90.22% Acquired -1.8% (price as of 2026-10-02)
Nov. 6, 2020 NWN I 274 $43.75 $11,988 274 Indirect · Acquired 8.3% (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.

Initial ownership (Form 3) 1 holding

07

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

DateTickerSecuritySharesOwnership
July 10, 2020 NWN Common Stock 376 Direct