Playbooks and
second opinions for
restless operators

Fundraising

Term sheet teardown: the clauses worth reading twice

Opening a five-part series on the language that quietly decides who controls your next round.

By Rosalind Achebe

A reader absorbed in a book by a window -- photo by Ariel Castillo on Pexels

Deep Dives

The slow readers are quietly winning

How one researcher gave up the breadth-versus-depth argument and built a reading habit that compounds.

By Devin Marchetti

Portrait of Halden Ross -- photo by Prince on Pexels

Scaling & Growth

Crossing the seed-to-Series-A desert

Halden Ross maps the three numbers that get a deck past week two of diligence.

By Halden Ross

Fundraising

Convertible notes: what they cost, when they help, how to cap them

Plus how to run a note round, negotiate the discount, and tell pre-money from post-money.

By Larkspur

Treasury Founder credit Cards & spend Banking Bookkeeping Bill pay Invoicing

Company News

The Larkspur Annual Letter, 2025

Numbers, revisions, and a few second thoughts about the year behind us.

By Imani Okonjo

Practical guides, teardowns, and templates for the work ahead

Browse Field Notes

Starting a Business

Storefront Founder Guide: the first ninety days

By Nadia Bellweather

Starting a Business

Storefront Founder Guide: money in, money out

By Nadia Bellweather

Starting a Business

Storefront Founder Guide: a brand people repeat

By Nadia Bellweather

Essays to stretch and provoke the operator’s imagination

Enter the Almanac

Ideas

Bet-the-company decisions

By Soren Vantalis

Portrait of Ines Okafor -- photo by Jake Nackos on Unsplash

Founder Features

Rebuilding marketplaces with Ines Okafor

Six years into Kestrel, Okafor shares the misfires, the fixes, and what comes next.

By Nadia Bellweather

Portrait of Marcus Adeyemi -- photo by Korede Adenola on Pexels

Founder Features

Marcus Adeyemi bets on the outliers

How one seed investor keeps finding returns out at the margins.

By Rosalind Achebe

Portrait of Priya Raghunathan -- photo by Thanh Xuan Nguyen Ly on Pexels

Founder Features

Priya Raghunathan wrote the note everyone signs

On the five-page document that underpins much of early-stage venture today.

By Nadia Bellweather

Portrait of Theo Lindqvist -- photo by Ben Khatry on Pexels

Founder Features

Theo Lindqvist errs on the side of curiosity

How the founder’s restless questions keep charting the next thing.

By Tamsin Rowe

Product releases, company news, and a look at the workbench

More About Larkspur

Company News

Raising to go further out

Today we’re announcing Larkspur’s $164M Series C — a mix of primary and secondary funding — at a $2.3B valuation, led by Halyard Partners.

By Imani Okonjo

Transactions

Product Updates

August 2026 — bulk categorisation, receipt forwarding for reimbursements, and more

By Wren Delacroix, Barrett Okoye, and Sana Mikkelsen

Transactions

Product Updates

Getting more out of the rebuilt Transactions view

By Evan Tiber

Month to date

$1,051,312.90

Product Updates

May 2026 — cashflow insight, payroll and HR integrations, and more

By Wren Delacroix, Barrett Okoye, and Sana Mikkelsen

Customers

Product Updates

April 2026 — manage customer records, filter invoices & more

By Wren Delacroix and Deanna Sørhaug

Explore all topics

Read all stories

Accounting & Finance Ops

Get into the numbers.

Business Banking

Move money without the paperwork tax.

Business Operations

Running the thing once it runs.

Company News

Announcements and updates from Larkspur.

Customer Stories

How other teams are building and growing.

Deep Dives

Beneath the surface, into the archives, down the rabbit hole.

Founder Features

Portraits of the people doing the building.

Fundraising

Meeting investors, and funding the next stretch.

Go-to-Market

Launching, positioning, and getting product out the door.

Ideas

Perspectives on business, risk, and what’s next.

Product Updates

The latest Larkspur releases and product news.

Scaling & Growth

Resources for reaching the next level.

Starting a Business

Resources for the first hundred decisions.