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
Expires:Oct 31, 2018
Estimated average burden
hours per response:23.8

Report for the Calendar Year or Quarter Ended:03-31-2021
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 CASUALTY CO
Address:6200 South Gilmore Road
Fairfield, OH  45014
Form 13F File Number:028-10755

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:Martin F. Hollenbeck
Title:Chief Investment Officer
Phone:513-870-2000
Signature, Place, and Date of Signing:
/s/ Martin F. HollenbeckFairfieldOH05-05-2021
[Signature][City, State][Date]
Report Type (Check only one.):
X13F 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:26
Form 13F Information Table Value Total:159,085
(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.]
No.Form 13F File NumberName
1028-10798CINCINNATI FINANCIAL CORP

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
Expires:Oct 31, 2018
Estimated average burden
hours per response:23.8

COLUMN 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6COLUMN 7COLUMN 8
VALUESHRS ORSH/PUT/INVESTMENTOTHERVOTING AUTHORITY
NAME OF ISSUERTITLE OF CLASSCUSIP(x$1000)PRN AMTPRNCALLDISCRETIONMANAGERSOLESHAREDNONE
ACCENTURE CL A ORDCOMMONG1151C1014,14415,000SH OTR1015,0000
AIR PRODUCTS AND CHEMICALS ORDCOMMON0091581066,96324,750SH OTR1024,7500
ANALOG DEVICES ORDCOMMON0326541051,2968,355SH OTR108,3550
AUTOMATIC DATA PROCESSING ORDCOMMON05301510313,57072,000SH OTR1072,0000
BLACKROCK ORDCOMMON09247X1017,54010,000SH OTR1010,0000
COMCAST CL A ORDCOMMON20030N1011,89435,000SH OTR1035,0000
CUMMINS ORDCOMMON23102110611,91946,000SH OTR1046,0000
DOVER ORDCOMMON26000310812,34290,000SH OTR1090,0000
DUKE ENERGY ORDCOMMON26441C2046,40066,300SH OTR1066,3000
ENBRIDGE ORDCOMMON29250N10511,263309,418SH OTR10309,4180
HASBRO ORDCOMMON4180561074,08542,500SH OTR1042,5000
HOME DEPOT ORDCOMMON4370761022,1377,000SH OTR107,0000
HONEYWELL INTERNATIONAL ORDCOMMON43851610610,85450,000SH OTR1050,0000
JOHNSON & JOHNSON ORDCOMMON4781601044,10925,000SH OTR1025,0000
JPMORGAN CHASE ORDCOMMON46625H10014,15793,000SH OTR1093,0000
LYONDELLBASELL INDUSTRIES CL A ORDCOMMONN537451001,84017,683SH OTR1017,6830
MICROSOFT ORDCOMMON59491810418,86280,000SH OTR1080,0000
PFIZER ORDCOMMON7170811038,565236,400SH OTR10236,4000
PINNACLE WEST ORDCOMMON7234841011,21714,958SH OTR1014,9580
PNC FINANCIAL SERVICES GROUP ORDCOMMON6934751051,75410,000SH OTR1010,0000
RAYTHEON TECHNOLOGIES ORDCOMMON75513E1013,09140,000SH OTR1040,0000
TJX ORDCOMMON8725401091,81927,500SH OTR1027,5000
US BANCORP ORDCOMMON9029733044,42580,000SH OTR1080,0000
VF ORDCOMMON9182041081,52819,125SH OTR1019,1250
VIATRIS ORDCOMMON92556V10641029,332SH OTR1029,3320
WEC ENERGY GROUP ORDCOMMON92939U1062,90131,000SH OTR1031,0000
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