ONDERDONK KEITH P (Vice Pres. Operational Support) received a stock award from SUBURBAN PROPANE PARTNERS LP

Compensation award — not an open‑market transaction. Less informative as a directional signal.

A · 1 award

ONDERDONK KEITH P

Filed: 11/18/2025ACC: 0001658711-25-000002

InsiderONDERDONK KEITH PCIK 1658711

→

IssuerSUBURBAN PROPANE PARTNERS LPCIK 1005210

Officer· Vice Pres. Operational Support

Since Nov 2018

+7.17K

Net shares

Net buyer

$268.6K

Total sold

Open market trades

0B · 0S

Total transactions

30.89K acquired · 23.73K disposed

Non-Derivative Transactions4

Common Units (representing limited partnership interests)

Direct

F · Tax Withholding

−4.81K

Price / share

$18.83

Trade value

$90.52K

% of position

6.0%

11/14/2025

80.69K→75.88K

Common Units (representing limited partnership interests)

Direct

M · Option Exercise

+9.46K

Price / share

$18.83

Trade value

$178.13K

% of position

12.5%

11/14/2025

75.88K→85.34K

Common Units (representing limited partnership interests)

Direct

D · Disposition

−9.46K

Price / share

$18.83

Trade value

$178.13K

% of position

11.1%

11/14/2025

85.34K→75.88K

Common Units (representing limited partnership interests)

Direct

A · Award

+10.72K

Price / share

—

Trade value

—

% of position

14.1%

11/15/2025

75.88K→86.60K

Total

Net shares

+5.91K

Net value

-$90.52K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Units (representing limited partnership interests) Direct	11/14/2025	F · Tax Withholding	−4.81K	$18.83	$90.52K	6.0%	80.69K	75.88K
Common Units (representing limited partnership interests) Direct	11/14/2025	M · Option Exercise	+9.46K	$18.83	$178.13K	12.5%	75.88K	85.34K
Common Units (representing limited partnership interests) Direct	11/14/2025	D · Disposition	−9.46K	$18.83	$178.13K	11.1%	85.34K	75.88K
Common Units (representing limited partnership interests) Direct	11/15/2025	A · Award	+10.72K	—	—	14.1%	75.88K	86.60K
Total			+5.91K		-$90.52K

Derivative Transactions2

Phantom Units

Direct

M · Option Exercise

Converts to

Common Units

9.46K shares

−9.46K

Strike price

Held after

10.60K

Exercisable

—

11/14/2025

Phantom Units

Direct

A · Award

Converts to

Common Units

10.72K shares

+10.72K

Strike price

Held after

21.32K

Exercisable

—

11/15/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Phantom Units Direct	Common Units9.46K shares	11/14/2025	M · Option Exercise	−9.46K		—	10.60K
Phantom Units Direct	Common Units10.72K shares	11/15/2025	A · Award	+10.72K		—	21.32K