import re

regex = r"\b([A-Z]+(?:[^\S\r\n]+[A-Z]+)*):[^\S\r\n]+([A-Z0-9].*?(?= [A-Z]|$))"

test_str = "COMPANY NAME:   Ruff name of company TYPE OF EVENT: Party NOTIFIED DATE: 1/27/20   COMPANY NAME: Company2/CPT TYPE OF EVENT: Fire NOTIFIED DATE: 1/31/20"

print(re.findall(regex, test_str))