Sigstr, the US-based developer of a personalised employee email system, raised $5m on Tuesday in a series A round led by venture capital fund Hyde Park Venture Partners that included enterprise software provider HubSpot, Battery Ventures, Grand Ventures and High Alpha Capital. It had previously raised $2m in equity financing and $850,000 in debt, according to securities filings, with $1.5m coming in a December 2015 round featuring High Alpha Capital and assorted angel investors.
Ericsson Ventures, the corporate VC arm…
