Substack Raises a Series C(post.substack.com)
post.substack.com
Substack Raises a Series C
https://post.substack.com/p/substack-series-c
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Some more information: https://www.nytimes.com/2025/07/17/business/substack-fundrai...
https://post.substack.com/p/substack-series-c