MacroCycle
Cambridge, US · Founded 2023 · 18 employees on LinkedIn · 7 known investors
Find your way into MacroCycle
887 people in our graph share verified history with the MacroCycle team — schools, employers, funds. One of them is your warm intro.
Bastian Hasslingerunlockedknows Jan-Georg Rosenboom · together at ETH Zürich (overlapped)
×5knows the team · via University of Cambridge
×2knows the team · via Cornell
×2knows the team · via Massachusetts Institute of Technology
knows the team · via Martin Trust Center for MIT Entrepreneurship
knows the team · via ExxonMobil
MacroCycle uses a proprietary chemical process called SolvoGenesis, based on solvent systems and macrocyclic chemistry, to convert textile waste into pure polyester resin at low cost. Its products include MacroTEX, a 100% polyester made from textile waste, and MacroPACK, a virgin-grade PET resin for plastic bottles derived from end-of-life textiles.
Founders & leadership
MacroCycle was founded in 2023 by Stwart Peña Feliz and Jan-Georg Rosenboom.
SP
Stwart Peña FelizinCo-Founder & CEOStewart Peña Feliz holds a degree in chemical engineering from Cornell University and an MBA from MIT Sloan. He has worked at ExxonMobil in operations and technical roles, and at Utility Global where he contributed to Series B fundraising, before co-founding MacroCycle Technologies, which converts textile and plastic waste into polyester resin and PET through its SolvoGenesis process.
JR
Jan-Georg RosenboominCo-founder & CTOJan-Georg Rosenboom is a chemical engineer with 12 years of experience at the intersection of polymer science and industrial implementation. He is an executive officer and director at MacroCycle, which converts textile waste into polyester resin and PET through a proprietary solvent-based process.
Board
CC
Catia CesariBoard director
TF
Temple FennellBoard director
Investors · 7
Reported raises · per SEC filings
Form D private placements$7M disclosed across 2 rounds · 2025–2026
▶$3MraisedMar 2026 · 8 investors · Other TechnologyRule 506(b)
▶$3MraisedMar 2026 · 8 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Temple FennellDirector
- Catia CesariDirector
- Stwart Pena FelizExecutive Officer, Director
- Kristin TaylorDirector
- Jan-Georg RosenboomExecutive Officer, Director
- Offering amount
- $3M
- Amount sold
- $3M
- First sale
- Feb 2026
- Incorporated
- Corporation, Delaware, 2023
- Federal exemptions
- 06b
▶$4MraisedFeb 2025 · 10 investors · Other TechnologyRule 506(b)
▶$4MraisedFeb 2025 · 10 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Catia CesariDirector
- Stwart Pena FelizExecutive Officer, Director
- Temple FennellDirector
- Jan-Georg RosenboomExecutive Officer, Director
- Offering amount
- $7M
- Amount sold
- $4M
- First sale
- Jan 2025
- Incorporated
- Corporation, Delaware, 2023
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Competitors · 2
by search overlapPurecycle67 shared keywordsPureCycle recycles polypropylene (No. 5) plastic waste into ultra-pure recycled resin using a patented purification process that removes color, odor, and contaminants. It supplies this recycled resin to manufacturers seeking sustainable, reusable plastic feedstock.
Waste Today24 shared keywordsWaste Today is a trade publication covering the waste, recycling, and environmental services industry, reporting on topics such as landfill operations, transfer stations, recycling programs, and company financial and M&A news. It serves waste operators, municipalities, and industry professionals, primarily in the U.S.
Companies competing with MacroCycle for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Frequently asked questions
- What does MacroCycle do?
- MacroCycle uses a proprietary chemical process called SolvoGenesis, based on solvent systems and macrocyclic chemistry, to convert textile waste into pure polyester resin at low cost. Its products include MacroTEX, a 100% polyester made from textile waste, and MacroPACK, a virgin-grade PET resin for plastic bottles derived from end-of-life textiles.
- Who founded MacroCycle?
- MacroCycle was founded by Stwart Peña Feliz, Jan-Georg Rosenboom in 2023.
- Who are MacroCycle's investors?
- MacroCycle's investors include Circular Innovation Fund, Neotribe Ventures, Volta Circle, Clean Energy Venture, Clean Energy Ventures, Cycle Capital, KdT Ventures.
- How much funding has MacroCycle raised?
- MacroCycle has disclosed $7M raised across 2 rounds.
- Where is MacroCycle headquartered?
- MacroCycle is headquartered in Cambridge, US.