CASTLE ANGELA M (VP & Chief Legal Officer) sold 60.9% of their position (2.38K shares) of OLIN CORP on the open market

Open‑market sale worth $57.7K — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

CASTLE ANGELA M

Filed: 2/24/2026ACC: 0002058796-26-000006

InsiderCASTLE ANGELA MCIK 2058796

→

IssuerOLIN CORPCIK 74303

Officer· VP & Chief Legal Officer

Since Feb 2026

-3.38K

Net shares

Net seller

$81.9K

Total sold

Open market trades

0B · 1S

Total transactions

3.38K acquired · 6.76K disposed

Non-Derivative Transactions3

Common Stock

Direct

M · Option Exercise

+3.38K

Price / share

—

Trade value

—

% of position

220.9%

2/20/2026

1.53K→4.91K

Common Stock

Direct

F · Tax Withholding

−1K

Price / share

$24.09

Trade value

$24.16K

% of position

20.4%

2/20/2026

4.91K→3.91K

Common Stock

Direct

S · Sale

−2.38K

Price / share

$24.25

Trade value

$57.70K

% of position

60.9%

2/24/2026

3.91K→1.53K

Total

Net shares

−2.26

Net value

-$81.86K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	2/20/2026	M · Option Exercise	+3.38K	—	—	220.9%	1.53K	4.91K
Common Stock Direct	2/20/2026	F · Tax Withholding	−1K	$24.09	$24.16K	20.4%	4.91K	3.91K
Common Stock Direct	2/24/2026	S · Sale	−2.38K	$24.25	$57.70K	60.9%	3.91K	1.53K
Total			−2.26		-$81.86K

Derivative Transactions1

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

3.38K shares

−3.38K

Strike price

Held after

6.76K

Exercisable

—

2/20/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Units Direct	Common Stock3.38K shares	2/20/2026	M · Option Exercise	−3.38K		—	6.76K

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned2.41

Total

2.41 indirect2.41

Security Title	Shares Owned	Ownership Type
Common Stock	2.41	Indirect
Total	2.41	2.41 indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported