Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 14 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 1, 2026 OLN A 10,535 $28.48 $300,037 42,722 Direct +32.73% Acquired -43.8% (price as of 2026-10-05)
May 1, 2025 OLN A 13,751 $21.77 $299,359 32,187 Direct +74.59% Acquired -26.5% (price as of 2026-10-05)
May 1, 2024 OLN A 4,851 $52.58 $255,066 18,436 Direct +35.71% Acquired -69.6% (price as of 2026-10-05)
Dec. 8, 2023 OLN A 54 $50.08 $2,704 13,585 Direct +0.40% Acquired -68.1% (price as of 2026-10-05)
Sept. 8, 2023 OLN A 54 $50.25 $2,714 13,531 Direct +0.40% Acquired -68.2% (price as of 2026-10-05)
June 9, 2023 OLN A 52 $51.37 $2,671 13,477 Direct +0.39% Acquired -68.9% (price as of 2026-10-05)
May 1, 2023 OLN A 4,632 $55.07 $255,084 13,425 Direct +52.68% Acquired -71.0% (price as of 2026-10-05)
March 13, 2023 OLN A 34 $51.91 $1,765 8,793 Direct +0.39% Acquired -69.2% (price as of 2026-10-05)
Dec. 9, 2022 OLN A 32 $54.38 $1,740 8,759 Direct +0.37% Acquired -70.6% (price as of 2026-10-05)
Sept. 9, 2022 OLN A 32 $55.19 $1,766 8,727 Direct +0.37% Acquired -71.0% (price as of 2026-10-05)
June 10, 2022 OLN A 28 $61.75 $1,729 8,696 Direct +0.32% Acquired -74.1% (price as of 2026-10-05)
May 2, 2022 OLN A 4,376 $58.95 $257,965 8,667 Direct +101.98% Acquired -72.9% (price as of 2026-10-05)
March 11, 2022 OLN A 17 $49.02 $833 4,291 Direct +0.40% Acquired -67.4% (price as of 2026-10-05)
Nov. 11, 2021 OLN A 4,274 $61.15 $261,355 4,274 Direct · Acquired -73.8% (price as of 2026-10-05)

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
May 1, 2026 OLN Phantom Stock Units Common Stock (10,535) · · 10,535 Acquired
May 1, 2025 OLN Phantom Stock Units Common Stock (13,751) · · 13,751 Acquired
May 1, 2024 OLN Phantom Stock Units [F1] Common Stock (4,851) · · 4,851 Acquired
Dec. 8, 2023 OLN Phantom Stock Units [F1] Common Stock (54) · · 54 Acquired
Sept. 8, 2023 OLN Phantom Stock Units [F1] Common Stock (54) · · 54 Acquired
June 9, 2023 OLN Phantom Stock Units [F1] Common Stock (52) · · 52 Acquired
May 1, 2023 OLN Phantom Stock Units [F1] Common Stock (4,632) · · 4,632 Acquired
March 13, 2023 OLN Phantom Stock Units [F1] Common Stock (34) · · 34 Acquired
Dec. 9, 2022 OLN Phantom Stock Units [F1] Common Stock (32) · · 32 Acquired
Sept. 9, 2022 OLN Phantom Stock Units [F1] Common Stock (32) · · 32 Acquired
June 10, 2022 OLN Phantom Stock Units [F1] Common Stock (28) · · 28 Acquired
May 2, 2022 OLN Phantom Stock Units [F1] Common Stock (4,376) · · 4,376 Acquired
March 11, 2022 OLN Phantom Stock Units [F1] Common Stock (17) · · 17 Acquired
Nov. 11, 2021 OLN Phantom Stock Units [F1] Phantom Stock Units (4,274) · · 4,274 Acquired

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

Initial ownership (Form 3) 1 holding

07

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

DateTickerSecuritySharesOwnership
Oct. 8, 2021 OLN Common Stock $1 par value 0 Direct