SEC FORM 13F-HR/A

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL

OMB Number:		3235-0006
Expires:	July 31, 2015
Estimated average burden
hours per response:		23.8

Report for the Calendar Year or Quarter Ended:

03-31-2024

Check here if Amendment	X	Amendment Number:	1
This Amendment (Check only one.):	X	is a restatement.
		adds new holdings entries.

Institutional Investment Manager Filing this Report:
Name:	First Business Financial Services, Inc.
Address:	401 CHARMANY DRIVE
	PO BOX 44961
	MADISON, WI 53744
Form 13F File Number:	028-15585

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name:	Brendan Freeman
Title:	President, Private Wealth
Phone:	608-232-5951
Signature, Place, and Date of Signing:
Brendan Freeman		Madison, WI	05-15-2024
[Signature]		[City, State]	[Date]

Report Type (Check only one.):
X	13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
	13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
	13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)

Form 13F Summary Page
	Report Summary:
	Number of Other Included Managers:	0
	Form 13F Information Table Entry Total:	165
	Form 13F Information Table Value Total:	932,543,995
		(thousands)

List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]
NONE

SEC FORM 13-F Information Table

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

OMB APPROVAL

OMB Number:		3235-0006
Expires:	July 31, 2015
Estimated average burden
hours per response:		23.8

COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
Ark Innovation	Common	00214Q104	261,618	5,224	SH		SOLE		5,224	0	0
Abbott Laboratories	Common	002824100	689,121	6,063	SH		SOLE		3,541	0	2,522
Abbvie Inc Com	Common	00287Y109	1,558,412	8,558	SH		SOLE		6,395	0	2,163
Adobe Inc	Common	00724F101	2,061,796	4,086	SH		SOLE		4,086	0	0
Advanced Micro Devices Inc	Common	007903107	736,580	4,081	SH		SOLE		4,081	0	0
Air Prods Chems Inc	Common	009158106	574,180	2,370	SH		SOLE		2,370	0	0
Allegheny Technologies Inc	Common	01741R102	688,492	13,455	SH		SOLE		13,455	0	0
Alliant Energy Corp	Common	018802108	222,466	4,414	SH		SOLE		1,298	0	3,116
Alphabet Inc Cap Stk Cl C	Common	02079K107	1,140,427	7,490	SH		SOLE		7,490	0	0
Alphabet Inc Cap Stk Cl A	Common	02079K305	5,390,314	35,714	SH		SOLE		35,574	0	140
Altria Group Inc	Common	02209S103	354,020	8,116	SH		SOLE		363	0	7,753
Amazon.com Inc	Common	023135106	1,555,778	8,625	SH		SOLE		8,625	0	0
American Express CO	Common	025816109	329,467	1,447	SH		SOLE		1,447	0	0
American Tower Corp	Common	03027X100	850,032	4,302	SH		SOLE		4,302	0	0
CENCORA INC	Common	03073E105	2,958,646	12,176	SH		SOLE		12,176	0	0
Ameriprise Financial Inc	Common	03076C106	479,215	1,093	SH		SOLE		1,093	0	0
Amgen Inc	Common	031162100	1,255,841	4,417	SH		SOLE		4,417	0	0
Analog Devices Inc	Common	032654105	2,598,367	13,137	SH		SOLE		13,137	0	0
Elevance Health INC	Common	036752103	1,246,570	2,404	SH		SOLE		2,404	0	0
Apple Inc	Common	037833100	8,876,662	51,765	SH		SOLE		46,753	0	5,012
Applied Materials Inc	Common	038222105	229,740	1,114	SH		SOLE		1,114	0	0
Arista Networks Inc	Common	040413106	3,822,226	13,181	SH		SOLE		13,181	0	0
Bank Of America Corp	Common	060505104	2,061,559	54,366	SH		SOLE		54,366	0	0
Barrick Gold Corp ADR	Common	067901108	183,040	11,000	SH		SOLE		11,000	0	0
Berkshire Hathaway INC-CL B	Common	084670702	751,049	1,786	SH		SOLE		1,677	0	109
BlackRock Inc	Common	09247X101	691,971	830	SH		SOLE		830	0	0
Bristol Myers Squibb Co	Common	110122108	216,812	3,998	SH		SOLE		3,998	0	0
Broadcom Inc	Common	11135F101	4,988,843	3,764	SH		SOLE		3,764	0	0
CSX Corp Com	Common	126408103	1,914,554	51,647	SH		SOLE		51,647	0	0
Caterpillar Inc	Common	149123101	242,943	663	SH		SOLE		575	0	88
Charles River Labs Intl	Common	159864107	352,235	1,300	SH		SOLE		1,300	0	0
Chevron Corp	Common	166764100	878,454	5,569	SH		SOLE		2,216	0	3,353
Ciena Corp	Common	171779309	860,479	17,401	SH		SOLE		17,401	0	0
Cisco Systems Inc	Common	17275R102	2,277,144	45,625	SH		SOLE		42,746	0	2,879
Cintas Corporation	Common	172908105	420,462	612	SH		SOLE		612	0	0
Citigroup Inc	Common	172967424	2,401,223	37,970	SH		SOLE		37,870	0	100
Coca-Cola Co	Common	191216100	1,455,166	23,785	SH		SOLE		3,025	0	20,760
Corning Inc	Common	219350105	375,942	11,406	SH		SOLE		11,406	0	0
Corteva Inc Com	Common	22052L104	1,862,914	32,303	SH		SOLE		32,303	0	0
Costco Wholesale Corp	Common	22160K105	2,397,165	3,272	SH		SOLE		3,272	0	0
Cummins Inc	Common	231021106	266,364	904	SH		SOLE		904	0	0
Danaher Corp	Common	235851102	232,989	933	SH		SOLE		933	0	0
Darden Restaurants Inc	Common	237194105	1,543,129	9,232	SH		SOLE		9,232	0	0
Walt Disney Company	Common	254687106	2,066,171	16,886	SH		SOLE		16,886	0	0
EOG Res Inc	Common	26875P101	1,222,023	9,559	SH		SOLE		9,559	0	0
Electronic Arts Inc	Common	285512109	1,799,934	13,567	SH		SOLE		13,567	0	0
Essential Utilities, Inc	Common	29670G102	991,199	26,753	SH		SOLE		26,753	0	0
Expedia Group Inc New	Common	30212P303	1,268,540	9,209	SH		SOLE		9,209	0	0
Exxon Mobil Corp	Common	30231G102	2,693,630	23,173	SH		SOLE		21,287	0	1,886
Meta Platforms Inc	Common	30303M102	484,609	998	SH		SOLE		890	0	108
Fidelity National Information	Common	31620M106	391,967	5,284	SH		SOLE		1,350	0	3,934
First Business Financial Servi	Common	319390100	13,132,125	350,190	SH		SOLE		0	0	350,190
Fiserv Inc	Common	337738108	5,781,169	36,173	SH		SOLE		948	0	35,225
Ford Motor Co	Common	345370860	156,558	11,789	SH		SOLE		10,789	0	1,000
Arthur J. Gallagher & Co	Common	363576109	321,801	1,287	SH		SOLE		1,287	0	0
General Dynamics Corp	Common	369550108	1,565,560	5,542	SH		SOLE		5,542	0	0
GE Aerospace	Common	369604301	201,157	1,146	SH		SOLE		739	0	407
Genuine Parts Co	Common	372460105	203,423	1,313	SH		SOLE		774	0	539
Home Depot Inc	Common	437076102	742,650	1,936	SH		SOLE		1,606	0	330
Illinois Tool Works Inc	Common	452308109	893,807	3,331	SH		SOLE		3,331	0	0
Intel Corp	Common	458140100	777,127	17,594	SH		SOLE		15,644	0	1,950
Intercontinental Exchange Inc	Common	45866F104	1,892,411	13,770	SH		SOLE		13,520	0	250
International Business Machine	Common	459200101	341,246	1,787	SH		SOLE		1,712	0	75
Intuitive Surgical Inc	Common	46120E602	494,872	1,240	SH		SOLE		1,240	0	0
Iqvia Holdings Inc	Common	46266C105	2,154,876	8,521	SH		SOLE		8,521	0	0
iShares S&P 500 Core	Common	464287200	3,087,612	5,873	SH		SOLE		5,873	0	0
iShares Core US Aggregate Bond	Common	464287226	45,120,860	460,699	SH		SOLE		460,699	0	0
Ishares Tr Global Tech ETF	Common	464287291	235,128	3,143	SH		SOLE		3,143	0	0
iShares MSCI EAFE ETF	Common	464287465	409,522	5,128	SH		SOLE		5,128	0	0
iShares Core S&P Mid-Cap ETF	Common	464287507	46,369,949	763,417	SH		SOLE		763,417	0	0
iShares Russell 1000 Value ETF	Common	464287598	51,641,712	288,324	SH		SOLE		288,324	0	0
iShares Russell 1000 Growth ET	Common	464287614	71,686,827	212,689	SH		SOLE		212,689	0	0
iShares Russell 1000 ETF	Common	464287622	1,606,631	5,578	SH		SOLE		5,578	0	0
iShares Russell 2000 Value	Common	464287630	731,161	4,604	SH		SOLE		4,604	0	0
iShares Russell 2000 Growth	Common	464287648	848,146	3,132	SH		SOLE		3,132	0	0
iShares Russell 2000	Common	464287655	1,245,607	5,923	SH		SOLE		5,923	0	0
iShares Core S&P Small-Cap ETF	Common	464287804	61,629,378	557,631	SH		SOLE		557,631	0	0
iShares MSCI ACWI ex US	Common	464288240	315,268	5,905	SH		SOLE		5,905	0	0
iShares Edge MSCI Min Vol USA	Common	46429B697	1,319,979	15,793	SH		SOLE		15,793	0	0
iShares Edge MSCI USA Momentum	Common	46432F396	3,809,762	20,335	SH		SOLE		20,335	0	0
iShares Core MSCI EAFE ETF	Common	46432F842	123,339,464	1,661,809	SH		SOLE		1,661,809	0	0
iShares Core Dividend Growth	Common	46434V621	52,855,560	910,361	SH		SOLE		910,361	0	0
JPMorgan Chase & Co	Common	46625H100	5,829,131	29,102	SH		SOLE		29,102	0	0
JPMorgan Ultra-Short Income ET	Common	46641Q837	11,332,331	224,625	SH		SOLE		224,625	0	0
Johnson & Johnson	Common	478160104	842,204	5,324	SH		SOLE		5,324	0	0
Kimberly-Clark Corp	Common	494368103	246,800	1,908	SH		SOLE		1,908	0	0
Kroger Co	Common	501044101	1,398,600	24,481	SH		SOLE		24,481	0	0
Lam Research Corporation	Common	512807108	2,693,192	2,772	SH		SOLE		2,772	0	0
Lilly Eli Co	Common	532457108	4,123,966	5,301	SH		SOLE		5,301	0	0
Lowe's Companies Inc	Common	548661107	2,126,741	8,349	SH		SOLE		8,349	0	0
MGE Energy Inc	Common	55277P104	577,647	7,338	SH		SOLE		5,958	0	1,380
Marathon Petroleum Corp	Common	56585A102	226,889	1,126	SH		SOLE		1,126	0	0
Marvell Technology Group LTD	Common	573874104	225,186	3,177	SH		SOLE		3,177	0	0
Mastercard Inc Cl A	Common	57636Q104	421,374	875	SH		SOLE		875	0	0
McDonald's Corp	Common	580135101	699,236	2,480	SH		SOLE		1,884	0	596
McKesson Corp	Common	58155Q103	280,773	523	SH		SOLE		523	0	0
Merck & Co Inc	Common	58933Y105	1,304,326	9,885	SH		SOLE		9,422	0	463
Microsoft Corp	Common	594918104	7,369,332	17,516	SH		SOLE		15,523	0	1,993
Microchip Technology Inc	Common	595017104	337,489	3,762	SH		SOLE		3,762	0	0
Mondelez Intl Inc Class A	Common	609207105	1,007,090	14,387	SH		SOLE		3,223	0	11,164
Nextera Energy Inc	Common	65339F101	256,854	4,019	SH		SOLE		703	0	3,316
Nice Ltd Sponsored ADR	Common	653656108	511,597	1,963	SH		SOLE		1,963	0	0
Nike Inc	Common	654106103	536,908	5,713	SH		SOLE		5,713	0	0
Novo Nordisk A/S ADR	Common	670100205	376,726	2,934	SH		SOLE		2,934	0	0
Nvidia Corp	Common	67066G104	6,216,493	6,880	SH		SOLE		6,880	0	0
Nuveen ESG Large Cap Value	Common	67092P300	460,336	11,846	SH		SOLE		11,846	0	0
PNC Financial Services Group I	Common	693475105	600,021	3,713	SH		SOLE		712	0	3,001
Palantir Technologies Inc	Common	69608A108	248,761	10,811	SH		SOLE		10,811	0	0
Parker Hannifin Corp	Common	701094104	247,327	445	SH		SOLE		445	0	0
Paypal Hldgs Inc	Common	70450Y103	237,748	3,549	SH		SOLE		3,549	0	0
Pepsico Inc	Common	713448108	2,203,026	12,588	SH		SOLE		11,990	0	598
Pfizer Inc	Common	717081103	287,213	10,350	SH		SOLE		9,850	0	500
Philip Morris International In	Common	718172109	1,024,861	11,186	SH		SOLE		1,798	0	9,388
Phillips 66	Common	718546104	225,083	1,378	SH		SOLE		1,378	0	0
Procter & Gamble Co	Common	742718109	1,437,211	8,858	SH		SOLE		7,858	0	1,000
Prudential Financial Inc	Common	744320102	1,935,222	16,484	SH		SOLE		16,484	0	0
Qualcomm Inc	Common	747525103	1,586,849	9,373	SH		SOLE		9,373	0	0
Quanta Services Inc	Common	74762E102	2,849,486	10,968	SH		SOLE		10,968	0	0
Republic Services Inc	Common	760759100	2,147,191	11,216	SH		SOLE		11,216	0	0
Rockwell Automation Inc	Common	773903109	252,583	867	SH		SOLE		867	0	0
SPDR S&P 500 ETF	Common	78462F103	23,032,341	44,033	SH		SOLE		44,033	0	0
Spdr Gold Trust Shs	Common	78463V107	1,131,460	5,500	SH		SOLE		5,500	0	0
SPDRA S&P MidCap 400 ETF	Common	78467Y107	510,219	917	SH		SOLE		917	0	0
Schlumberger Ltd	Common	806857108	1,753,153	31,986	SH		SOLE		31,986	0	0
The Charles Schwab Corp	Common	808513105	292,326	4,041	SH		SOLE		4,041	0	0
Consumer Discr Select Sect SPD	Common	81369Y407	1,039,162	5,651	SH		SOLE		5,651	0	0
Energy Select Sector SPDR ETF	Common	81369Y506	2,560,588	27,122	SH		SOLE		27,122	0	0
Financial Select Sector SPDR E	Common	81369Y605	1,014,881	24,095	SH		SOLE		24,095	0	0
Industrials Select Sector SPDR	Common	81369Y704	1,765,077	14,013	SH		SOLE		14,013	0	0
Technology Select Sector SPDR	Common	81369Y803	2,787,694	13,385	SH		SOLE		13,385	0	0
Communication Sector Select SP	Common	81369Y852	576,275	7,057	SH		SOLE		7,057	0	0
Starbucks Corp	Common	855244109	259,091	2,835	SH		SOLE		2,835	0	0
Stryker Corp	Common	863667101	2,385,204	6,665	SH		SOLE		6,665	0	0
TJX Companies Inc	Common	872540109	1,867,852	18,417	SH		SOLE		18,417	0	0
T Mobile US Inc	Common	872590104	2,129,531	13,047	SH		SOLE		13,047	0	0
Terran Orbital Corporation	Common	88105P103	13,100	10,000	SH		SOLE		10,000	0	0
Tetra Tech Inc New	Common	88162G103	648,517	3,511	SH		SOLE		3,511	0	0
Texas Instruments Inc	Common	882508104	1,866,660	10,715	SH		SOLE		10,715	0	0
Thermo Fisher Scientific Inc	Common	883556102	212,142	365	SH		SOLE		365	0	0
Thomson Reuters Corp.	Common	884903808	614,282	3,942	SH		SOLE		3,942	0	0
Transdigm Group Inc	Common	893641100	803,003	652	SH		SOLE		652	0	0
US Bancorp	Common	902973304	417,587	9,342	SH		SOLE		4,189	0	5,153
Union Pacific Corp	Common	907818108	398,161	1,619	SH		SOLE		1,619	0	0
UnitedHealth Group Inc	Common	91324P102	2,060,920	4,166	SH		SOLE		4,166	0	0
Valero Energy Corp	Common	91913Y100	268,666	1,574	SH		SOLE		1,574	0	0
Vanguard FTSE Developed Market	Common	921943858	326,807	6,514	SH		SOLE		6,514	0	0
Vanguard Information Technolog	Common	92204A702	272,132	519	SH		SOLE		519	0	0
Vanguard Communication SVCS ET	Common	92204A884	813,564	6,200	SH		SOLE		6,200	0	0
Vanguard Mid-Cap ETF	Common	922908629	707,604	2,832	SH		SOLE		2,832	0	0
Vanguard Index Growth	Common	922908736	516,988	1,502	SH		SOLE		1,502	0	0
Vanguard Index Value	Common	922908744	437,931	2,689	SH		SOLE		2,689	0	0
Vanguard Small-Cap ETF	Common	922908751	1,172,438	5,129	SH		SOLE		5,129	0	0
Vanguard Total Stock Market ET	Common	922908769	235,231,592	905,085	SH		SOLE		905,085	0	0
Verizon Communications Inc	Common	92343V104	226,080	5,388	SH		SOLE		4,505	0	883
Visa Inc	Common	92826C839	386,805	1,386	SH		SOLE		1,386	0	0
Wal-Mart Inc	Common	931142103	474,019	7,878	SH		SOLE		7,878	0	0
Waste Mgmt Inc Del	Common	94106L109	353,190	1,657	SH		SOLE		1,657	0	0
Weyco Group Inc	Common	962149100	385,620	12,096	SH		SOLE		0	0	12,096
Xcel Energy Inc.	Common	98389B100	200,864	3,737	SH		SOLE		3,600	0	137
Amdocs Ltd ADR	Common	G02602103	471,551	5,218	SH		SOLE		5,218	0	0
Aon PLC Shs Cl A	Common	G0403H108	544,631	1,632	SH		SOLE		1,632	0	0
Accenture PLC	Common	G1151C101	2,568,380	7,410	SH		SOLE		7,010	0	400
Eaton Corp PLC	Common	G29183103	638,493	2,042	SH		SOLE		2,042	0	0
Johnson Controls Intl, PLC	Common	G51502105	1,233,111	18,878	SH		SOLE		18,878	0	0
TE Connectivity Ltd	Common	H84989104	406,672	2,800	SH		SOLE		2,800	0	0