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
Estimated average burden
hours per response: 23.8

Report for the Calendar Year or Quarter Ended: 06-30-2023
Check here if Amendment    Amendment Number:
This Amendment (Check only one.):    is a restatement.
   adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Advisor OS, LLC
Address: 141 WEST JACKSON BLVD., SUITE 3540
CHICAGO, IL  60604
Form 13F File Number: 028-20349
CRD Number (if applicable): 000287792
SEC File Number (if applicable): 801-110639

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: Phillip J Kosmala
Title: CCO
Phone: 312-330-4781
Signature, Place, and Date of Signing:
/s/ Phillip J Kosmala ChicagoIL 08-01-2023
[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: 8
Form 13F Information Table Entry Total: 1,438
Form 13F Information Table Value Total: 611,194,448
(round to nearest dollar)
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.]
No. Name Form 13F File No. CRD No. (if applicable) SEC File No. (if applicable) CIK
1 Braun-Bostich & Associates Inc. 028-18789 000288336 801-110570 0001740842
2 Concordia Wealth Planning, LLC   000304639    
3 INVESTMENT PLANNERS, INC.   000018557 801-35642 0000789995
4 MJP ASSOCIATES INC /ADV 028-20473 000127654 801-63389 0000715113
5 CWS Financial Advisors, LLC 028-20009 000297000 801-113289 0001802459
6 Roman Retirement Planning   000306871    
7 CAFG Wealth Management 028-21611 000165901 801-77473 0001908203
8 Redwood   000312942 801-120723