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Schedule IV - Reinsurance
 12 Months Ended
Dec. 31, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]  
Schedule IV - Reinsurance
Schedule IV

W. R. Berkley Corporation and Subsidiaries
Reinsurance
Years ended December 31, 2020, 2019 and 2018
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, 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 %
Year ended December 31, 2019     
Insurance$7,180,759 $1,312,564 $217,814 $6,086,009 3.6 %
Reinsurance & Monoline Excess206,000 86,155 657,645 777,490 84.6 %
Total$7,386,759 $1,398,719 $875,459 $6,863,499 12.8 %
Year ended December 31, 2018     
Insurance$6,782,757 $1,188,297 $197,445 $5,791,905 3.4 %
Reinsurance & Monoline Excess190,459 80,970 531,833 641,322 82.9 %
Total$6,973,216 $1,269,267 $729,278 $6,433,227 11.3 %
___________________________
See Report of Independent Registered Public Accounting Firm.