Seal is a CRM for business brokers, built by two people in Brooklyn.
We're Guilherme Soares and Carter Klein.
Before Seal, we both worked at a personal finance app through its sale to a publicly traded company, for more than $400M.
The team behind Seal

Guilherme (G) Soares
Co-founder and CEO
At our last company, G worked in corporate development through its sale and then became Chief of Staff to the CEO. Before that, he spent two years at JPMorgan in banking and credit, then two years at Hercules Capital underwriting loans to technology companies.
G grew up in small towns in Mississippi and Kentucky. He knew the families who owned the restaurants and the shops, and he saw what it did to a town when one of them closed. Keeping those businesses open is what he cares about.
Carter Klein
Co-founder and CTO
Carter has spent his career building in fintech. At our last company, he worked on underwriting systems powering billions of dollars in cash advances. Before that, he was the first engineer at another fintech startup, and a part of Capital One's LMM banking tech team.
His family has worked for small business across New York City for four generations, from the Garment District to the Fulton Street Fish Market to Wall Street, and he's passionate about using tech to create financial opportunities for his generation and beyond.
Why we built Seal
A lot of selling a business is follow-up and paperwork.

When our last company was sold, we had bankers and lawyers, but nobody on staff to handle the buyers' due diligence, so G took it on. He ran the data room, answered buyers' questions, and compared the incoming LOIs. Most of the job was keeping everyone on the same page and keeping the deal moving.
Carter was building the software underneath that company. His systems took in customers' financial records from hundreds of banks and turned them into numbers the company could act on. A sale runs on the same problem, except the records show up as tax returns, P&Ls, bank statements, and a lease, in whatever shape the seller keeps them.
On a Main Street sale the broker does both jobs, usually across several listings at once. Both come second to the work only the broker can do, which is keeping a nervous seller and a first-time buyer in the deal until it closes.
Between us we had already done both of those jobs, so we knew what to build. We started Seal to take the follow-up and the paperwork off brokers' desks, so more of their day goes to the buyer and the seller.
Some of the people coming into this industry say software will replace the broker. We don't think it can. A seller is handing over the thing they spent thirty years building, and they choose a person to do that, not a tool. What Seal takes off the broker's desk is the part that was never the job, and the CRM is just the first step.
What makes Seal different
Built for brokers, not sales teams.
Built around listings and buyers
General-purpose CRMs are built for sales teams working a pipeline of leads. Seal is built around how a broker's book works: listings, buyers, NDAs, and the documents in between.
It does the follow-up
Most CRMs and spreadsheets only hold what you type into them. Seal reads your inbox, follows up on every deal in your book, and only asks you about what needs you.
One subscription, no add-ons
Many data rooms charge per deal, per page, or per gigabyte. Seal is $299 per broker per month, with every listing, buyer, and document included.
No annual contract
Some CRMs and data rooms require an annual contract. Seal is month to month, and you can cancel any time.
Your book comes over for free
Switching CRMs usually means exporting and cleaning up your own data. We bring your book over from your old CRM at no charge.
How Seal works
You work with the two of us.
Getting started
Book a call with us or start a free trial. We bring your book over from your old CRM, then you connect your inbox. Your 30-day trial starts once both are done.
Who you'll work with
Guilherme (G) Soares and Carter Klein, the two founders. There's no support queue between you and the people building Seal.
How to reach us
Email g@tryseal.co or carter@tryseal.co. One of us will reply within 24 hours.
Design partners
A call with both of us every two weeks for six months. What you tell us goes into the product, and your price stays at $49 per broker per month for as long as you stay.
Key facts
Seal at a glance.
- Company name
- Seal (The Harbor Seal Corporation)
- Type
- CRM software for business brokers and M&A advisors
- Founded
- 2026
- Founders
- Guilherme (G) Soares, Co-founder and CEO
Carter Klein, Co-founder and CTO - Headquarters
- Brooklyn, New York
- Website
- tryseal.co
- Core offering
- A CRM, deal documents (teasers, CIMs, and NDAs), and a data room for each listing
- Pricing
- $299 per broker per month, with no add-ons. Design partner spots are $49 per broker per month.
- Contract terms
- Month to month. Cancel any time. 30-day free trial, no card.
- Services
- Free import from your old CRM
- Communication
- Email the founders directly. Replies within 24 hours.
- Competitors
- General-purpose CRMs, spreadsheets, and stand-alone virtual data rooms
- Social
- LinkedIn: Guilherme (G) Soares and Carter Klein
FAQ
Frequently asked questions.
Who's behind Seal?
Guilherme (G) Soares and Carter Klein. We started Seal in Brooklyn in 2026, after we both worked at a personal finance app through its sale to a publicly traded company.
Is Seal only for business brokers?
It's built for business brokers and M&A advisors who sell companies. M&A advisors pay the same price as brokers.
Does Seal replace the broker?
No. A seller is handing over the thing they spent thirty years building, and they choose a person to do that. Seal takes the follow-up and the paperwork off your desk.
Does Seal email buyers or sellers on its own?
Only if you allow it. Otherwise it writes the email and you send it.
See something you think we could do better?
We build software for business brokers and M&A advisors. We want to build the best product we can for you, and we're always asking questions and learning more.
