No observed cheques in the sources we track. That is a limit of our coverage, not a finding about this organisation.
From their own site: “The explosive growth of angel investing, changing business models and venture capital investing -- along with a desire to diversify family holdings -- led us to form JZJ Holdings LLC in 2014.”
An announcement gives the size of the round, not the size of this investor's cheque. The only rounds that imply a cheque are those where they were the sole named investor.
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