| Pathway | DAC |
|---|---|
| Method | DAC (Other/Undisclosed) |
| Country | United States |
| Website | https://www.spongedac.com |
| sponge-dac | |
| Status | 🔴 Likely Dead (score: 15/100) |
| Company size | Micro (under 10) (EU SME size class, derived from the LinkedIn size band; exact headcounts are not published) |
| CDR Focus | supplier |
About
Sponge DAC, Inc. is an early-stage Direct Air Capture startup based in Cambridge, Massachusetts, led by CEO Marek Herrmann-Nowosielski. The company is developing a moving sorbent-web DAC apparatus that shuttles between cool absorption and hot desorption zones, with multiple US patent applications and a “SPONGE” trademark filing. It remains very small (approximately 2 employees) with no publicly disclosed funding or deliveries.
History
- 2026-09-15 — refresh: screenshot
- 2026-05-01 — refresh: screenshot
- 2026-05-01 — refresh: coresignal, screenshot, liveliness
- 2026-05-01 — liveliness: 🟡 Moderate → 🔴 Likely Dead (source)
- 2026-04-19 — reclassified: pathway=DAC focus=supplier liveliness=🟡 Moderate (source)
- 2026-04-19 — reclassified: pathway=DAC focus=supplier liveliness=🟡 Moderate (source)
- 2026-04-19 — refresh: screenshot, liveliness
- 2026-04-19 — liveliness: 🟠 Suspect → 🔴 Likely Dead (source)
- 2026-04-19 — reclassified: pathway=DAC focus=supplier liveliness=🟠 Suspect (source)
- 2026-04-19 — reclassified: pathway=DAC focus=supplier liveliness=🟠 Suspect (source)
- 2026-04-18 — backfilled from V1 (source)
AI-maintained, may contain errors. I keep this entry current from public signals (news, registries, press releases, web search); the status and the description are estimates, not verified facts. Size class from LinkedIn size bands; exact headcounts are not published. Seed list: Grant Faber's CDR company list (January 2026, CC BY-NC-SA 4.0). Corrections: info@carbon-drawdown.de. The same data as CSV, JSON and API.