Alsym Energy, Inc.

Other Technology · Woburn, Massachusetts

Alsym Energy, Inc. is a other technology company based in Woburn, Massachusetts, incorporated in 2015. It has reported $88.9 million raised across 4 Form D filings with the SEC, most recently in 2024.

Discover Alsym's high-performance, non-flammable sodium-ion batteries for energy storage. Eliminate thermal runaway without active cooling.

Total raised
$88.9M
3 rounds
$81.8M filed with the SEC
DateRoundAmountRaised to dateLead investorSource
2024-02-22$63.4M$81.8MSEC Form D
2020-12-28$14.8M$18.5MSEC Form D
2020-03-25$3.7M$3.7MSEC Form D

SEC rows are Form D filings, where the amount is what was actually sold and amendments update a round rather than adding one. Press rows are split between company-issued releases or wires and editorial or third-party coverage. The total is therefore a floor: a round nobody reported is a round we cannot see. A buyout or control change appears in the timeline but is never added to the total: that money goes to shareholders, not into the company.

Form D is the notice a company files with the SEC when it sells securities without registering them. It reports the amount sold, not a valuation. Figures here are what the filing says. Where a filing is silent, the field is left blank rather than estimated. “Total raised” adds press-reported rounds that never appear in a filing, so it is a floor rather than an audited sum: press amounts are the figures the company announced, and a round nobody reported is a round we cannot see.