Fundraising Fox

Metalmark Innovations

Allston, US · Founded 2017 · Incorporated in Delaware

Find your way into Metalmark Innovations

639 people in our graph share verified history with the Metalmark Innovations team — schools, employers, funds. One of them is your warm intro.

Noubar Afeyanunlockedknows Elijah Shirman · together at Massachusetts Institute of Technology (overlapped)
×5knows the team · via Harvard Business School
knows the team · via Massachusetts Institute of Technology
×4knows the team · via Wellesley College
knows the team · via Wyss Institute at Harvard University

Founders & leadership

Metalmark Innovations was founded in 2017 by Sissi Liu, Elijah Shirman, and Joanna Aizenberg.

SLSissi Liu
Sissi LiuinChief Executive OfficerSissi Liu is Chief Executive Officer and Co-Founder of Metalmark Innovations, which develops air cleaning and filtration products. She has over 20 years of experience in climate technology and serves on technical committees for ASHRAE.
ESElijah Shirman
Elijah ShirmaninVice President, TechnologyElijah Shirman is Vice President of Technology at Metalmark Innovations, where he leads R&D efforts spanning materials science, physics, and chemistry. He has experience guiding projects from concept through prototyping and manufacturing readiness.
JA
Joanna AizenbergTreasurer

Reported raises · per SEC filings

Form D private placements

$3.9M disclosed across 3 rounds · 2020–2022

▶$3.3MraisedFeb 2022 · 4 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Denise ChenDirector
  • Sissi LiuExecutive Officer, Director
  • Elijah ShirmanExecutive Officer
  • Tanya ShirmanExecutive Officer, Director
Offering amount
$3.5M
Amount sold
$3.3M
Minimum investment
$50K
First sale
Feb 2022
Incorporated
Other, Delaware, 2017
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$500KraisedFeb 2021 · 3 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Sissi LiuExecutive Officer, Director
  • Joanna AizenbergExecutive Officer, Director
  • Tanya ShirmanExecutive Officer
  • Elijah ShirmanExecutive Officer, Director
Offering amount
$500K
Amount sold
$500K
Minimum investment
$50K
First sale
Feb 2021
Incorporated
Corporation, Delaware, 2017
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$150KraisedFeb 2020 · 2 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Sissi LiuExecutive Officer, Director
  • Elijah ShirmanExecutive Officer, Director
  • Joanna AizenbergExecutive Officer, Director
Offering amount
$150K
Amount sold
$150K
Minimum investment
$50K
Proceeds to insiders
$70K
First sale
Feb 2020
Incorporated
Corporation, Delaware, 2017
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

In the news

Metalmark Innovations Secures Funding from JLL Foundation to Scale Next-Generation Indoor Air Quality Solutionseinpresswire.com · Dec 2025Cambridge Massachusetts based Metalmark Innovations is raising $3,500,000.00 in New Equity Investment. - intelligence360intelligence360.news · Mar 2022Why we invested in Metalmarkpropagatorvc.medium.com · Mar 2021Sissi Liu of Metalmark Innovations, Inc. - Family Office Insightsfamilyofficeinsights.com · Sep 2019

Frequently asked questions

Who founded Metalmark Innovations?
Metalmark Innovations was founded by Sissi Liu, Elijah Shirman, Joanna Aizenberg in 2017.
How much funding has Metalmark Innovations raised?
Metalmark Innovations has disclosed $3.9M raised across 3 rounds.
Where is Metalmark Innovations headquartered?
Metalmark Innovations is headquartered in Allston, US.