MARINKO MARK W. (SR VP, Chief Financial Officer) exercised options at SUNCOKE ENERGY, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 3 exercises

MARINKO MARK W.

Filed: 2/25/2026ACC: 0001612207-26-000002

InsiderMARINKO MARK W.CIK 1612207

→

IssuerSUNCOKE ENERGY, INC.CIK 1514705

Officer· SR VP, Chief Financial Officer

Since Mar 2022

-6.69K

Net shares

Net seller

$69.2K

Total sold

Open market trades

0B · 0S

Total transactions

29.18K acquired · 35.87K disposed

Non-Derivative Transactions7

Common Stock

Direct

M · Option Exercise

+8.47K

Price / share

—

Trade value

—

% of position

16.0%

2/23/2026

52.90K→61.37K

Common Stock

Direct

F · Tax Withholding

−4.20K

Price / share

$6.22

Trade value

$26.15K

% of position

6.9%

2/23/2026

61.37K→57.16K

Common Stock

Direct

M · Option Exercise

+8.47K

Price / share

—

Trade value

—

% of position

19.3%

2/24/2026

43.95K→52.41K

Common Stock

Direct

F · Tax Withholding

−3.75K

Price / share

$5.88

Trade value

$22.06K

% of position

7.2%

2/24/2026

52.41K→48.66K

Common Stock

Direct

M · Option Exercise

+7.60K

Price / share

—

Trade value

—

% of position

15.6%

2/24/2026

48.66K→56.26K

Common Stock

Direct

F · Tax Withholding

−3.37K

Price / share

$6.22

Trade value

$20.94K

% of position

6.0%

2/24/2026

56.26K→52.90K

Common Stock

Direct

J · J

+4.63K

Price / share

—

Trade value

—

% of position

8.1%

2/24/2026

57.16K→61.80K

Total

Net shares

+17.85K

Net value

-$69.15K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	2/23/2026	M · Option Exercise	+8.47K	—	—	16.0%	52.90K	61.37K
Common Stock Direct	2/23/2026	F · Tax Withholding	−4.20K	$6.22	$26.15K	6.9%	61.37K	57.16K
Common Stock Direct	2/24/2026	M · Option Exercise	+8.47K	—	—	19.3%	43.95K	52.41K
Common Stock Direct	2/24/2026	F · Tax Withholding	−3.75K	$5.88	$22.06K	7.2%	52.41K	48.66K
Common Stock Direct	2/24/2026	M · Option Exercise	+7.60K	—	—	15.6%	48.66K	56.26K
Common Stock Direct	2/24/2026	F · Tax Withholding	−3.37K	$6.22	$20.94K	6.0%	56.26K	52.90K
Common Stock Direct	2/24/2026	J · J	+4.63K	—	—	8.1%	57.16K	61.80K
Total			+17.85K		-$69.15K

Derivative Transactions3

RSUs (02.21.2025)

Direct

M · Option Exercise

Converts to

Common Stock

8.47K shares

−8.47K

Strike price

Held after

16.95K

Exercisable

—

2/23/2026

RSUs (02.23.2023)

Direct

M · Option Exercise

Converts to

Common Stock

8.47K shares

−8.47K

Strike price

Held after

0.00

Exercisable

—

2/24/2026

RSUs (02.22.2024)

Direct

M · Option Exercise

Converts to

Common Stock

7.60K shares

−7.60K

Strike price

Held after

7.60K

Exercisable

—

2/24/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
RSUs (02.21.2025) Direct	Common Stock8.47K shares	2/23/2026	M · Option Exercise	−8.47K	—	16.95K
RSUs (02.23.2023) Direct	Common Stock8.47K shares	2/24/2026	M · Option Exercise	−8.47K	—	0.00
RSUs (02.22.2024) Direct	Common Stock7.60K shares	2/24/2026	M · Option Exercise	−7.60K	—	7.60K