CHRISTOPHER J. MURPHY III - 11 Dec 2025 Form 4 Insider Report for 1ST SOURCE CORP (SRCE)

Role: Executive Chairman, Director, 10%+ Owner
Signature: /s/ Brian S. Duba, Attorney-in-Fact
Issuer symbol: SRCE
Transactions as of: 11 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 11 Dec 2025, 15:37:04 UTC
Previous filing: 05 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MURPHY CHRISTOPHER J III	Executive Chairman, Director, 10%+ Owner	PO BOX 1602, SOUTH BEND	/s/ Brian S. Duba, Attorney-in-Fact	11 Dec 2025	0001217073

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SRCE	Common Stock	Gift	$0	-2,500	-0.51%	$0.000000	485,885	11 Dec 2025	Direct
transaction	SRCE	Common Stock	Gift	$0	-2,500	-0.1%	$0.000000	2,527,512	11 Dec 2025	By Spouse	F1
holding	SRCE	Common Stock						62,730	11 Dec 2025	By 401(k)	F2
holding	SRCE	Common Stock						125,893	11 Dec 2025	By Corporation
holding	SRCE	Common Stock						282,119	11 Dec 2025	By ERCO III Partnership	F3
holding	SRCE	Common Stock						214,770	11 Dec 2025	By Ltd. Partnership
holding	SRCE	Common Stock						584,600	11 Dec 2025	By LLC	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Mr. Murphy disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that Mr. Murphy is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.
F2	Between January 1, 2024 and December 31, 2024, Mr. Murphy acquired zero shares of 1st Source Corporation common stock under the 401(k) plan. The information in this report is based on a plan statement dated December 31, 2024.
F3	Mr. Murphy disclaims beneficial ownership of those shares held by the partnership exceeding his pecuniary interest, and this report shall not be deemed an admission that Mr. Murphy is the beneficial owner of such excess shares for purposes of Section 16 or for any other purpose.
F4	Mr. Murphy's spouse is a voting member, and Mr. Murphy is a non-voting member, of the LLC. Mr. Murphy disclaims beneficial ownership of those shares held by the LLC exceeding his pecuniary interest, and this report shall not be deemed an admission that Mr. Murphy is the beneficial owner of such excess shares for purposes of Section 16 or for any other purpose.