About
Underwriters who’d rather
read a gauge than a form.
We started Tripline in Tampa in 2021 to write cover that pays on a number anyone can check. Five years, six perils and five storm seasons later, the claim forms are still at zero.
(01) Logbook
Six years,
one line each.
2021
2022
2023
First payout, T+39 h
Storm Tamsin crossed Tier 1 in eleven cells.
2024
2025
2026
(02) Team
Six people,
one grid.
Underwriting, data science, claims that aren’t claims, and the people who answer brokers on a Sunday before landfall.

Anders Kowalczyk
Co-founder and CEO
Anders spent nineteen years in property catastrophe reinsurance before starting Tripline to write cover that could be read in five numbers. He still signs the weekly list of cells that crossed a line and the notes that go with them.

Ayesha Rahman
Chief Underwriting Officer
Ayesha sets every strike, exit and limit on the book, and she replays each one against thirty years of readings before it goes into a quote. She came from a flood-risk modelling team and still keeps a wall of printed cell maps next to her desk.

Tomás Ferreira
Head of Data Science
Tomás built the consensus model that turns three sources into one cell value, the number the independent calculation agent then checks and signs. He previously cleaned station records for a national weather service and now spends his Fridays arguing with sensors that read warm.

Chidinma Okafor
Head of Events and Settlement
Chidinma runs the desk that watches a storm from its first forecast to the last transfer, and she writes the settlement note that each policyholder receives. She trained as a loss adjuster, which is why she is happy that most of her notes no longer start with a site visit.

Gabriel Mensah
Head of Brokerage
Gabriel looks after the forty-odd brokers who place Tripline policies and writes the quote files they take to their clients. He spent fourteen years on the broker side of the table, so he reads a schedule the way his clients do, which is to say with a pencil.

Yuki Nakamura
Head of Product
Yuki designs the policy schedule, the alert and the settlement note, and insists that each of them fits on one page. She started in industrial design for measurement instruments, and still prototypes on paper before anything reaches a screen.
(03) Capacity
Who pays
when the index does.
Rated carriers and a catastrophe syndicate carry the risk, layer by layer, up to $180M for one event.
Halvard Re
$0–5M
42.5 % of the layer
A+ · Stable outlook (demo)
Ostwick Capital Re
$5M–25M
57.5 % of the layer
A · Stable outlook (demo)
Lindqvist Mutual
$25M–75M
34.0 % of the layer
A+ · Positive outlook (demo)
Corbel & Vane
$75M–120M
29.5 % of the layer
A− · Stable outlook (demo)
Brightwater Syndicate 4418
$120M–180M
100 % of the layer, placed in two lines
A · Stable outlook (demo)