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Investment Banking to Web3 & the $1T Climate Finance Wave

Investment Banking to Web3 & the $1T Climate Finance Wave

Michael Grohmann

Sep 4, 2025

67 min

Michael Grohmann

Episode Description

In the first episode of Offscript by Penomo, we sit down with Michael Grohmann - former Managing Director at MainFirst Bank (later Stifel) and now board member at Callirius AG - to explore the shift from traditional investment banking to Web3 and climate finance. Michael shares his journey from decades in European equity trading to building Callirius, a venture focused on turning nature into an asset class. We dive into: - What investment banking really means and how it compares to private credit - Why institutional investors move slowly, and why regulation is both the bottleneck and the safeguard - The cultural clash between Web3’s impatience and the long cycles of institutional finance - Why institutions aren’t “evil,” but essential for scaling climate-positive investments - The trillion-dollar funding gap for climate and how tokenization could unlock capital for carbon markets and beyond If you want an unfiltered look at how legacy finance, Web3, and climate finance intersect, and what it will take to mobilize $1 trillion a year for the energy transition, this is the episode to watch.

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© 2026 Penomo B.V.

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Amsterdam, Netherlands

Copyright © 2026 Penomo BV

Penomo B.V. is a technology company providing infrastructure software and data solutions. We do not engage in or provide regulated financial, investment, or brokerage services.

*Disclaimer: The information presented on Penomo’s website is for informational purposes only. It does not constitute investment brokerage, investment advice, or any form of financial recommendation. Penomo does not provide legal, tax, or financial advice. This content should not be interpreted as an offer, recommendation, or solicitation to make investment decisions, purchase financial instruments, or enter into any contractual agreement. The information provided does not account for individual investment objectives, financial situations, or specific needs. Penomo strives to ensure the accuracy and relevance of its content; however, all information is subject to change without notice. We do not guarantee updates to reflect changes in market conditions, regulations, or business operations. Users should seek independent professional advice before making any financial or investment decisions.

For further inquiries regarding regulatory compliance and specific jurisdictional details, please contact us

penomo

© 2026 Penomo Foundation Ltd.

3 Fraser Street #04-23A Duo Tower

Singapore 189352

© 2026 Penomo B.V.

Daalwijkdreef 47, 1103 AD,

Amsterdam, Netherlands

Copyright © 2026 Penomo BV

Penomo B.V. is a technology company providing infrastructure software and data solutions. We do not engage in or provide regulated financial, investment, or brokerage services.

*Disclaimer: The information presented on Penomo’s website is for informational purposes only. It does not constitute investment brokerage, investment advice, or any form of financial recommendation. Penomo does not provide legal, tax, or financial advice. This content should not be interpreted as an offer, recommendation, or solicitation to make investment decisions, purchase financial instruments, or enter into any contractual agreement. The information provided does not account for individual investment objectives, financial situations, or specific needs. Penomo strives to ensure the accuracy and relevance of its content; however, all information is subject to change without notice. We do not guarantee updates to reflect changes in market conditions, regulations, or business operations. Users should seek independent professional advice before making any financial or investment decisions.

For further inquiries regarding regulatory compliance and specific jurisdictional details, please contact us

penomo

© 2026 Penomo Foundation Ltd.

3 Fraser Street #04-23A Duo Tower

Singapore 189352

© 2026 Penomo B.V.

Daalwijkdreef 47, 1103 AD,

Amsterdam, Netherlands

Copyright © 2026 Penomo BV

Penomo B.V. is a technology company providing infrastructure software and data solutions. We do not engage in or provide regulated financial, investment, or brokerage services.

*Disclaimer: The information presented on Penomo’s website is for informational purposes only. It does not constitute investment brokerage, investment advice, or any form of financial recommendation. Penomo does not provide legal, tax, or financial advice. This content should not be interpreted as an offer, recommendation, or solicitation to make investment decisions, purchase financial instruments, or enter into any contractual agreement. The information provided does not account for individual investment objectives, financial situations, or specific needs. Penomo strives to ensure the accuracy and relevance of its content; however, all information is subject to change without notice. We do not guarantee updates to reflect changes in market conditions, regulations, or business operations. Users should seek independent professional advice before making any financial or investment decisions.

For further inquiries regarding regulatory compliance and specific jurisdictional details, please contact us