About Compact Membrane Systems
Compact Membrane Systems is a private company based in New Castle, Delaware. It has reported $26,799,927 raised in two offerings on Form D since April 2023. Its chief executive is Erica Nemser.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Nov 24, 2025 | Dec 4, 2025 | $10,299,968of $19.9M target | 4 | $2.5M | EquityRule 506(b) | Form D ↗ |
| Apr 17, 2023 | Apr 28, 2023amended Aug 4, 2023 | $16,499,959of $18.8M target | 5 | $3.2M | EquityRule 506(b) | Form D/A ↗1 earlier filing |
| Total, two offerings | $26,799,927 | |||||
First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.
Leadership Team
Executive officers and directors listed on Compact Membrane Systems's Form D filed Dec 4, 2025.
GR
Guido Radaelli
Director
CE
Chris Erickson
Director
TS
Tony Sun
Director
EN
Erica Nemser
Chief Executive Officer and director
Earlier filings also listed Bill Charlton (executive officer, last listed Aug 2023) and Bennett Nemser (director, last listed Aug 2023).