Insights

Essays, playbooks for founders, and every letter we send to the investors in our funds.

Two people reviewing and signing documents across a desk

Essays

The case for the long first cheque

Why we write fewer, larger first cheques, hold back more than half of each fund for follow-ons, and accept the slower pace that comes with both.

Theo Marchetti

Investor letters

Third-quarter letter, 2026

Our letter to the partners in our funds for the third quarter of 2026: two new commitments, a partial sale of Payfield, and progress at Albedo and Juniper.

Grant Holloway and Sofia Ortega

Three colleagues reviewing documents together at a meeting table

Playbooks

Running a board meeting that helps you

A practical guide for founders to board meetings that earn their time: the pre-read, the agenda, how to reach decisions, and how often to meet.

Nadia Mensah and Lena Fischer

Investor letters

Second-quarter letter, 2026

Our letter to the partners in our funds for the second quarter of 2026: two new Fund V investments, early results at Amperra and Kiln, and where Fund III stands after Ostra.

Grant Holloway and Sofia Ortega

An engineer holding a laptop in a server room

Essays

Boring software, durable companies

Why we keep backing infrastructure software that few people outside engineering teams will ever see, and what makes it so hard to replace once it is in.

Rafael Costa and Jun Seo

Wind turbines along a bare stretch of coast under a grey sky

Essays

The grid is the bottleneck

Clean power is now cheap to build and slow to connect. Why our climate investing has shifted towards storage, grid software and the industries that must plug in.

Clara Novak and Hana Weber

Two colleagues planning a project on a whiteboard covered in notes

Essays

What we look for in a founding team

At seed and Series A we are mostly backing people. The qualities we have learned to look for in a founding team, and a few we have learned to discount.

Grant Holloway and Kwame Asante

A hand ticking items off a handwritten checklist in a notebook

Playbooks

The first eighteen months after a seed round

What to do with the eighteen months after a seed round closes: where the money should go, what to measure, and when to start thinking about the next raise.

Hana Weber and Lena Fischer

Investor letters

Annual letter, 2025

Our annual letter to the partners in our funds: closing Fund V, the sale of Ostra, Tidewater's first year as a public company, and the first five Fund V investments.

Nadia Mensah and Theo Marchetti

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