Alexandra Sack
About Alexandra Sack
Public information about Alexandra Sack's career is limited. Searches for her profile on LinkedIn, Crunchbase and a personal site did not return a page that could be confirmed as hers, so this page does not list employers, companies she founded or her education.
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The one AI-related round tied to her on the Lounge deals desk is eComID's Seed round of about $17M in August 2026. CB Insights lists eComID's seed round on 2026-08-25 at $16.82M. The round included H&M Group Ventures, Regeneration.VC, Systemiq Capital and Stadium. CB Insights names Alexandra Sack among the co-investors, alongside other angels, some of them undisclosed.
No public statement from Alexandra Sack about her preferred stage, sectors, geographies or check size was found. Her only confirmed deal is a seed-stage round, but one deal is not enough to describe a pattern. Her check size in eComID has not been published.
- eComID: Seed round of about $17M, reported in August 2026, in which she is listed as a co-investor. This page does not describe what the company does, because the sources reviewed did not say.
Investing activity
Alexandra Sack appears in 1 AI deal tracked by the Lounge deals desk, rounds totalling $17M. The rounds are mostly Seed, with a median round size of $17M. The most recent is eComID (Seed, $17M, Aug 2026).
Alexandra Sack most often invests alongside Systemiq capital, Alan Mamedi, Filip Ekvall and Madeleine Persson, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Alexandra Sack
Who is Alexandra Sack?
Alexandra Sack is an angel investor. She is listed as a co-investor in eComID's Seed round in August 2026. Little else about her background is public.
What AI startups has Alexandra Sack invested in?
The confirmed AI-related investment is eComID, which raised a Seed round of about $17M in August 2026. No other portfolio companies could be verified.
What is Alexandra Sack's check size?
Her check size has not been published, and no public statement about it was found.
What stage does Alexandra Sack invest in?
The only confirmed investment is a seed-stage round. She has made no public statement about her preferred stage.
Who else invested in eComID's seed round with Alexandra Sack?
CB Insights lists co-investors including H&M Group Ventures, Regeneration.VC, Systemiq Capital, Stadium, Capitalt, Course Corrected and Paul Polman, plus undisclosed angels.
Is Alexandra Sack an angel investor?
Yes. Alexandra Sack invests personally as an angel.
What AI companies has Alexandra Sack invested in?
Alexandra Sack's AI investments include eComID. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Alexandra Sack invest at?
In the rounds tracked on Lounge, Alexandra Sack has invested at Seed, with a median round of $17M.
Who does Alexandra Sack co-invest with?
Alexandra Sack's most frequent co-investors on Lounge are Systemiq capital (1 deal), Alan Mamedi (1 deal), Filip Ekvall (1 deal), Madeleine Persson (1 deal) and August Erséus (1 deal).
How can founders reach Alexandra Sack?
Founders on Lounge can see Alexandra Sack's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Alexandra Sack to their Investor Pipeline to track the conversation.