ARGONNE NATIONAL LAB: all contributions

2025–2026 · Reported individual contributions grouped by employer.

These are contributions by individuals, not by their employer, industry, or location. Refunds remain negative; memo-only rows are marked and are not additional money.

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Showing the last prepared contribution list. Updated records are not ready.

#	Reported contributor / location	Reported employer / occupation	Recipient / reporting committee	Date ↕	Amount ↑	Election	Filing details / source
21	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2026-06-30	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 2000478FEC filing ↗
22	LISTWAN, JOSEPHLOMBARD IL 60148	TECHNICIAN ARGONNE NATIONAL LAB	THOMAS MASSIE FOR CONGRESSC00509729	2026-05-11	$5	Primary 2026 (P2026)	Filing 1993714FEC filing ↗
23	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2026-05-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1981761FEC filing ↗
24	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2026-06-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 2000478FEC filing ↗
25	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2026-05-30	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1981761FEC filing ↗
26	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-09-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1927082 · amendedFEC filing ↗
27	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-08-30	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1917409 · amendedFEC filing ↗
28	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-05-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1896959FEC filing ↗
29	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-04-30	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1893659FEC filing ↗
30	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-04-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1893659FEC filing ↗
31	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-03-30	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1893660 · amendedFEC filing ↗
32	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-03-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1893660 · amendedFEC filing ↗
33	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-06-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 2002702 · amendedFEC filing ↗
34	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-05-30	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1896959FEC filing ↗
35	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-08-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1917409 · amendedFEC filing ↗
36	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-12-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1943805FEC filing ↗
37	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-11-30	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1929786FEC filing ↗
38	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-11-05	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1929786FEC filing ↗
39	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2025-10-30	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 1927083 · amendedFEC filing ↗
40	UNDERWOOD, DAVIDNAPERVILLE IL 60563	PHYSICIST ARGONNE NATIONAL LAB.	END CITIZENS UNITEDC00573261	2026-07-31	$5	Primary (P)	* EARMARKED CONTRIBUTION: SEE BELOWFiling 2009205FEC filing ↗

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