Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 23 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 7, 2026 ATO M 1,082 · · 920 Direct -54.05% Disposed (price as of 2026-10-02)
March 7, 2026 ATO M 1,082 $184.73 $199,878 7,959 Direct +15.73% Acquired -14.9% (price as of 2026-10-02)
March 6, 2026 ATO A 920 $184.73 $169,952 2,002 Direct +85.03% Acquired -14.9% (price as of 2026-10-02)
Dec. 16, 2025 ATO G 442 $169.16 $74,769 6,877 Direct -6.04% Disposed -7.1% (price as of 2026-10-02)
March 8, 2025 ATO M 1,293 · · 1,082 Direct -54.44% Disposed (price as of 2026-10-02)
March 8, 2025 ATO M 1,293 $147.75 $191,041 7,319 Direct +21.46% Acquired 6.4% (price as of 2026-10-02)
March 7, 2025 ATO A 1,082 $147.75 $159,866 2,375 Direct +83.68% Acquired 6.4% (price as of 2026-10-02)
March 8, 2024 ATO A 1,293 $115.96 $149,936 1,293 Direct · Acquired 35.5% (price as of 2026-10-02)
March 8, 2024 ATO M 1,367 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 8, 2024 ATO M 1,367 $115.96 $158,517 5,917 Direct +30.04% Acquired 35.5% (price as of 2026-10-02)
March 10, 2023 ATO A 1,367 $109.72 $149,987 1,367 Direct · Acquired 43.2% (price as of 2026-10-02)
March 10, 2023 ATO M 1,322 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 10, 2023 ATO M 1,322 $109.72 $145,050 4,460 Direct +42.13% Acquired 43.2% (price as of 2026-10-02)
March 11, 2022 ATO A 1,322 $113.40 $149,915 1,322 Direct · Acquired 38.6% (price as of 2026-10-02)
March 4, 2022 ATO M 1,652 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 4, 2022 ATO M 1,652 $114.38 $188,956 3,054 Direct +117.83% Acquired 37.4% (price as of 2026-10-02)
March 6, 2021 ATO M 1,375 · · 1,652 Direct -45.42% Disposed (price as of 2026-10-02)
March 6, 2021 ATO M 1,375 $90.79 $124,836 1,375 Direct · Acquired 73.1% (price as of 2026-10-02)
March 5, 2021 ATO A 1,652 $90.79 $149,985 3,027 Direct +120.15% Acquired 73.1% (price as of 2026-10-02)
March 6, 2020 ATO A 1,375 $109.09 $149,999 1,375 Direct · Acquired 44.1% (price as of 2026-10-02)
March 8, 2019 ATO A 1,504 $99.73 $149,994 7,704 Direct +24.26% Acquired 57.6% (price as of 2026-10-02)
March 9, 2018 ATO A 3,000 $79.80 $239,400 6,065 Direct +97.88% Acquired 97.0% (price as of 2026-10-02)
March 10, 2017 ATO A 3,000 $77.19 $231,570 3,000 Direct · Acquired 103.6% (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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
March 7, 2026 ATO Restricted Stock Unit Common Stock (1,082) · · 1,082 Disposed
March 6, 2026 ATO Restricted Stock Unit Common Stock (920) · · 920 Acquired
March 8, 2025 ATO Restricted Stock Unit Common Stock (1,293) · · 1,293 Disposed
March 7, 2025 ATO Restricted Stock Unit Common Stock (1,082) · · 1,082 Acquired
March 8, 2024 ATO Restricted Stock Unit Common Stock (1,293) · · 1,293 Acquired
March 8, 2024 ATO Restricted Stock Unit Common Stock (1,367) · · 1,367 Disposed
March 10, 2023 ATO Restricted Stock Unit Common Stock (1,367) · · 1,367 Acquired
March 10, 2023 ATO Restricted Stock Unit Common Stock (1,322) · · 1,322 Disposed
March 11, 2022 ATO Restricted Stock Unit Common Stock (1,322) · · 1,322 Acquired
March 4, 2022 ATO Restricted Stock Unit Common Stock (1,652) · · 1,652 Disposed
March 6, 2021 ATO Restricted Stock Unit Common Stock (1,375) · · 1,375 Disposed
March 5, 2021 ATO Restricted Stock Unit Common Stock (1,652) · · 1,652 Acquired
March 6, 2020 ATO Restricted Stock Unit Common Stock (1,375) · · 1,375 Acquired
March 8, 2019 ATO Phantom Stock Units Common Stock (1,504) · · 1,504 Acquired
March 9, 2018 ATO Phantom Stock Units Common Stock (3,000) · · 3,000 Acquired
March 10, 2017 ATO Phantom Stock Units Common Stock (3,000) · · 3,000 Acquired

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