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Schedule IV - Reinsurance
 12 Months Ended
Dec. 31, 2022
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]  
Schedule IV - Reinsurance
Schedule IV

W. R. Berkley Corporation and Subsidiaries
Reinsurance
Years ended December 31, 2022, 2021 and 2020
Premiums Written
(In thousands, other than percentages)Direct
Amount		Ceded
to Other
Companies		Assumed
from Other
Companies		Net
Amount		Percentage
of Amount
Assumed
to Net
Year ended December 31, 2022     
Insurance$10,363,730 $1,799,639 $220,055 $8,784,146 2.5 %
Reinsurance & Monoline Excess331,408 105,343 993,859 1,219,924 81.5 %
Total$10,695,138 $1,904,982 $1,213,914 $10,004,070 12.1 %
Year ended December 31, 2021     
Insurance$9,220,683 $1,727,854 $250,985 $7,743,814 3.2 %
Reinsurance & Monoline Excess310,367 109,413 918,099 1,119,053 82.0 %
Total$9,531,050 $1,837,267 $1,169,084 $8,862,867 13.2 %
Year ended December 31, 2020     
Insurance$7,625,981 $1,490,395 $211,515 $6,347,101 3.3 %
Reinsurance & Monoline Excess248,069 94,815 762,082 915,336 83.3 %
Total$7,874,050 $1,585,210 $973,597 $7,262,437 13.4 %
___________________________
See Report of Independent Registered Public Accounting Firm.