SEC FORM 13F-HR

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: 03-31-2024
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: Cincinnati Specialty Underwriters Insurance CO
Address: 6200 South Gilmore Road
Fairfield, OH  45014
Form 13F File Number: 028-12741
CRD Number (if applicable):
SEC File Number (if applicable):

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: Steven A. Soloria
Title: Chief Investment Officer
Phone: 513-870-2000
Signature, Place, and Date of Signing:
/s/ Steven A. Soloria FairfieldOH 05-02-2024
[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: 1
Form 13F Information Table Entry Total: 40
Form 13F Information Table Value Total: 317,994,917
(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 Number CRD No. (if applicable) SEC File No. (if applicable) CIK
1 CINCINNATI FINANCIAL CORP 028-10798     0000020286

SEC FORM 13-F Information Table

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 INFORMATION TABLE

OMB APPROVAL
OMB Number: 3235-0006
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 FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
3M ORD COMMON 88579Y101 BBG000BP5522 4,253,407 40,100 SH   OTR 1 0 40,100 0
ABBOTT LABORATORIES ORD COMMON 002824100 BBG000B9ZZG4 3,091,552 27,200 SH   OTR 1 0 27,200 0
ABBVIE ORD COMMON 00287Y109 BBG003P7K0B5 4,953,120 27,200 SH   OTR 1 0 27,200 0
ACCENTURE CL A ORD COMMON G1151C101 BBG000D9DC22 8,665,250 25,000 SH   OTR 1 0 25,000 0
AGREE REALTY REIT ORD COMMON 008492100 BBG000BC9H21 942,480 16,500 SH   OTR 1 0 16,500 0
AIR PRODUCTS AND CHEMICALS ORD COMMON 009158106 BBG000BC4LR0 3,149,510 13,000 SH   OTR 1 0 13,000 0
AMERICAN TOWER REIT COMMON 03027X100 BBG000B9Y214 5,927,700 30,000 SH   OTR 1 0 30,000 0
ANALOG DEVICES ORD COMMON 032654105 BBG000BB6RX0 7,377,567 37,300 SH   OTR 1 0 37,300 0
APPLE ORD COMMON 037833100 BBG000B9Y5X2 52,815,840 308,000 SH   OTR 1 0 308,000 0
AUTOMATIC DATA PROCESSING ORD COMMON 053015103 BBG000JG1MT2 11,737,780 47,000 SH   OTR 1 0 47,000 0
BAXTER INTERNATIONAL ORD COMMON 071813109 BBG000BCVLK7 8,612,110 201,500 SH   OTR 1 0 201,500 0
BLACKROCK ORD COMMON 09247X101 BBG000C2PYL6 8,337,000 10,000 SH   OTR 1 0 10,000 0
BROADCOM ORD COMMON 11135F101 BBG00KHY5SQ7 51,624,720 38,950 SH   OTR 1 0 38,950 0
CHUBB ORD COMMON H1467J104 BBG000BR16M8 4,774,729 18,426 SH   OTR 1 0 18,426 0
CISCO SYSTEMS ORD COMMON 17275R102 BBG000C3JBN9 4,466,945 89,500 SH   OTR 1 0 89,500 0
COMCAST CL A ORD COMMON 20030N101 BBG000BFTG15 2,167,500 50,000 SH   OTR 1 0 50,000 0
DOLLAR GENERAL ORD COMMON 256677105 BBG000NV1PS8 1,950,750 12,500 SH   OTR 1 0 12,500 0
ENBRIDGE ORD COMMON 29250N105 BBG000K5M411 16,051,764 443,664 SH   OTR 1 0 443,664 0
HASBRO ORD COMMON 418056107 BBG000BKVWG0 1,695,600 30,000 SH   OTR 1 0 30,000 0
HOME DEPOT ORD COMMON 437076102 BBG000BKZDM1 12,275,200 32,000 SH   OTR 1 0 32,000 0
JPMORGAN CHASE ORD COMMON 46625H100 BBG000DMBZW1 18,627,900 93,000 SH   OTR 1 0 93,000 0
LAM RESEARCH ORD COMMON 512807108 BBG000BNFW27 2,703,879 2,783 SH   OTR 1 0 2,783 0
LYONDELLBASELL INDUSTRIES CL A ORD COMMON N53745100 BBG000WCFWH2 1,261,419 12,333 SH   OTR 1 0 12,333 0
MCDONALD'S ORD COMMON 580135101 BBG000BNT1L9 3,242,425 11,500 SH   OTR 1 0 11,500 0
MICROSOFT ORD COMMON 594918104 BBG000BPHFS9 25,243,200 60,000 SH   OTR 1 0 60,000 0
MONDELEZ INTERNATIONAL CL A ORD COMMON 609207105 BBG000D4M6H0 2,800,000 40,000 SH   OTR 1 0 40,000 0
NEXTERA ENERGY ORD COMMON 65339F101 BBG000BJSF01 3,195,500 50,000 SH   OTR 1 0 50,000 0
PEPSICO ORD COMMON 713448108 BBG000DH7TN1 1,225,070 7,000 SH   OTR 1 0 7,000 0
PINNACLE WEST ORD COMMON 723484101 BBG000BRDVJ4 726,376 9,720 SH   OTR 1 0 9,720 0
PROLOGIS REIT COMMON 74340W103 BBG000B9Z339 1,562,640 12,000 SH   OTR 1 0 12,000 0
REGIONS FINANCIAL ORD COMMON 7591EP100 BBG000Q3JQJ6 1,866,942 88,733 SH   OTR 1 0 88,733 0
RPM ORD COMMON 749685103 BBG000DCPNF4 9,516,000 80,000 SH   OTR 1 0 80,000 0
RTX ORD COMMON 75513E101 BBG000BW8TX8 2,535,780 26,000 SH   OTR 1 0 26,000 0
SNAP ON ORD COMMON 833034101 BBG000BT7MD3 3,998,970 13,500 SH   OTR 1 0 13,500 0
TJX ORD COMMON 872540109 BBG000BV8G95 3,752,540 37,000 SH   OTR 1 0 37,000 0
US BANCORP ORD COMMON 902973304 BBG000FFFQT4 3,508,950 78,500 SH   OTR 1 0 78,500 0
VALERO ENERGY ORD COMMON 91913Y100 BBG000BBGKP3 7,533,062 44,133 SH   OTR 1 0 44,133 0
VERIZON COMMUNICATIONS ORD COMMON 92343V104 BBG000HS79Q4 1,258,800 30,000 SH   OTR 1 0 30,000 0
WEC ENERGY GROUP ORD COMMON 92939U106 BBG000BWP918 7,801,400 95,000 SH   OTR 1 0 95,000 0
WESTERN ALLIANCE ORD COMMON 957638109 BBG000Q1KHQ0 763,540 11,895 SH   OTR 1 0 11,895 0
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