Startup Investor Accelerator SIA logo transparentGet in touch
Orange angled pill

Learn investing
while investing.

A 3-month, hands-on program to elevate your skills.

Navigate the world of Angel Investing alongside other investors, working with actual startups, high-impact resources, and the guidance of an internationally acclaimed team to get you to the next level.

Yellow circleDark circleStartup Investor Accelerator program for angel investors and startup companies in the US and around the worldStartup Investor Accelerator program for angel investing and funding startupsAngled blue half circle

A transformative experience

From Seattle to the World.

Mossy Ventures has brought its world-renowned, hands-on method over the Atlantic, to bestow accredited investors with the necessary skills to navigate the Angel world with confidence; working together to scale the European startup scene in the process

Curved rectangle shapeOrange circle

Upcoming Events

Angels & Beers (For Investors)

Angels & Beers (For Investors)

Get the right skills

By way of a developed small venture capital fund, participants will go through a 12-week series of actual investor meetings, collaborative reviews, and founder pitches to develop angel investing skills and acquire industry experience with a proven and methodical decision-making process.

Opportunity Analysis

Understand the Startup World

Get exposed to working startups and go through a deal screening process to comprehend not only what makes a solid startup.

Thesis Development

Build a Prioritized Investment Thesis

Define your priorities as an investor, structure your decision-making process, and put it to the test while honing your personal brand as an Angel.

Angel syndication

Have a Network of Investors

Be a part of a whole group of diverse Angels with whom to share in this learning process, connecting on expertise and insights while helping to open up and nurture the Ecosystem.

Due diligence proces

Follow through on your Ventures

Learn by doing in a controlled environment that encourages experimentation by understanding the inside structure for a startup's future success.

Collaborate and co-investing

Make an Investment Together

Join forces with peers and lean on each others’ strengths to materialize your combined efforts in the form of a cooperative collaborative deal.

Contact us
Orange ellipse
Our Selected Startups.

Invest in the

Every program starts with a total of 60 actual Startups (pre-seed to seed stage) actively looking for investment. All of these growth opportunities, scalable in their own right, have some form of proven traction, and come from a variety of sectors to ensure the best case scenarios for our group of 20-40 aspiring investors to work with.

  • TomboyX startup logo

    TomboyX operates as a retail clothing company that primarily sells underwear and apparel for living without labels. It also offers bras, boxers, trunks, shorts, hats, socks, and underwear. The company was founded in 2012 and is headquartered in Seattle, Washington.

    Overall Span

    7 Funding Rounds

    Total Funding


  • ESS logo

    ESS is a provider of long-duration energy storage solutions ideally suited for C&I, utility, microgrid, and off-grid applications.

    Overall Span

    Post IPO Equity

    Total Funding


  • Curi Bio Logo

    Curi Bio provides biosystems and AI-enabled data analytics services.

    Overall Span

    Series A

    Total Funding


  • Latchel Logo

    Latchel provides property management software that helps streamline maintenance and work orders.

    Overall Span

    Venture series

    Total Funding


Grey semicircle
Blue semicircle
Nurturing the ecosystem

"How can we make Angel Investing more accessible?

In this ever-growing entrepreneurial world, where some ideas seem to pop out of nowhere to become entire companies, there is a need for a generation of capable investors to take the lead and steer the ecosystem in the right direction.

Through our research-based process, we help Business Angels perfect their approach to startup investment while gaining access to:

International Networks

A Supportive Community



Continued learning opportunities

Events and opportunities globally

Angel Investing Program Startup Investor AcceleratorStartup Investor Accelerator angel investing programStartup Investor Accelerator program
Yellow half circle

More Angels. Better Angels.
Stronger Startups.

Orange circle
A Proven Journey

An idea rooted in experience

As a long-tiome Angel Investor and founder of Mossy Ventures, a collection of investor programs and associated funds, John Sechrest has personally trained over 600 angel investors, advising entrepreneurs and helping new startups grow to a level of investibility.

Mossy Ventures angel investing group and startup funding organization in Seattle, WA logo

The Startup Investor Accelerator, the European edition of this methodical training, brings together all of this experience of its parent programs with the objective of "sharing the knowledge" and continue to develop the startup and investor ecosystem.


Rounds of the program run


Investments done in the program


Investors who participated


Startups who participated


Raised in the program


Invested by alumni

John Sechrest attending an investment conference event
Angled blue curved rectangleAngled grey curved rectangle
Angled yellow half circle
Scouting & Pre-selection

New Investor

With participants from a variety of of fields and experiences, our training programs are skillful at facilitating collaboration and common growth.

Some of our candidates occupy positions in big corporations, such a a Google and Microsoft, while others arrive as self-made business owners and entrepreneurs. As an organization, our focus is to bring together a selection of minds who have value to add.

It is expected for participants to:

Be accredited investors

Have knowledge and expertise

Be team players

John Sechrest attending an investment conference eventJanusz Diemko candidate for Startup Investor Accelerator programVertical blue curved rectangle
Angled yellow curved rectangleOrange circle
Scouting & Pre-selection

Ready to begin?

As our network is our strongest asset, we take the selection process very seriously aiming to connect with each application on a personal level.

1. Meet up!

Initial introduction/contact. You can either schedule a call with us or attend an event and get to know us in person.

2. Get approved

Once you have the background info, and are excited to work with our alumni investors, you will get an invitation to join our screening process.

3. Gain access

Once you register, you can join the next scheduled learning cohort. In the meantime you get full access to our Alumni network, introductions to the angel ecosystem, and various resources and tools.

4. Take off!

Having joined, you and 20-40 other cohort investors, will travel a personalized learning journey while maximizing your decision making.

Schedule a call
Program overview

Committing to your Growth


6-9pm CET
9-12pm PT

3 months


N° Startups:

Start Date:
September 19th, 2024

What do I get from the program?

60 fundraising early-stage startups, from the local ecosystem, from diverse industries, and with diver
se readiness stages, will be introduced into the program. Investors, using platform will screen, generate initial opinions and listen to 1-minute pitches. An initial investment thesis will be formed, angel investing grounds will be laid, and through a voting mechanism, 24 initial profiles will move to 24 quarter-finalists.

What does the program fee of $1000 cover?

Investors will divide into due diligence teams, and spend will spend 4 weeks conducting more intense due diligence on the finalist companies. They will learn to analyze the startups from all angles and present a Due Diligence report and overview.

Is there a minimum investor net worth requirement?

In Europe, the participants should either have €100,000 net worth OR €50,000 annual income. In USA & Canada, the numbers are - $1,000,000 (TNW) or $200,000.

What is special about this program?

Since this is a real investing experience, all participating investors will do a small-ticket investment - and the funds will be given to the winning startup of the program. This nuance brings a level of seriousness, commitment, and real-world experience to the investors. Moreover, needing to select one startup, causes the investors to have harder ad deeper conversations and pay more attention to their own investment thesis, others’ investing style, and investor biases.

Get the Full

Request our program to learn more about each
training session and the content to be covered.

Send me the programYellow circle
Angled orange half circleCurved rectangle shapeAngled up grey curved rectangle

Join a community of investors
that keeps growing

Ticket for the Trans-Atlantic Startup Investor Accelerator with text

The program will be conducted over a 10-week period. Participating investors need to be committed to attending weekly sessions. While occasional absences are understood, the value, both individually and for the collective, is derived from active participation.

  • Deal syndication
  • Access to slack/whatsapp/discord channels
  • LinkedIn group invites
Learn about the program

What our participants say.

Angled yellow curved rectangle

What an amazing program! I joined it "knowing" what the discussions would be about. And I was surprised not only by the conversations' content but about what I learned about investing and my investment thesis. My favorite question was asked in Session 16, by a fellow participant " As investors, do you want to be seen as the investor that invested in X, or the investor that invested in Y"? This question helped solidify my choice. "

Joel Cohen

Joel Cohen testimonial headshot

One exciting thing about the program is that it creates a safe space for you to broaden your knowledge in industries. You can be an expert in a particular sector and never venture outside it. This program is excellent at providing you with a network of other investors with additional expertise you can tap into and many companies from different backgrounds and locations. This is an excellent way of learning the ropes of angel investing with like-minded people.

Joao Paulo Diego

Joao Paulo Diogo testimonial headshot

There is no better way of learning what you read in textbooks and watch in videos about valuations, security types, economic terms, investors rights, and so forth, than to put it into practice in real life conversations with founders. At every cohort, we are able to evaluate 60+ of companies, examine their team culture, understand their market opportunity, and ultimately assess why they are uniquely positioned to generate value. As I continue my journey as startup investor, I feel more equipped to evaluate companies at an early stage with a deep understanding of what it takes to support them in their journey to success.

Matteo Costa

Matteo Costa testimonial headshot

No two experiences are alike.

Get in touchGrey half circle

Are you a
Startup Owner?

As part of our program working with emerging growth companies, we provide a platform for startups looking for funding, wishing to present their ideas and meet with potential investors for the chance to scale their operation and expand their growth.

Apply to participateAngled yellow half circle 2
Attend Startup Investor Accelerator program main event
Demo day 2024

Come see for yourself.

For every cohort of our course, we organize an event in which startups pitch and investors identify their investment analysis.

The event is open to visitors and we encourage you to participate and find out more about us.

Get your ticket

Next event: June 4th, 2024

Horizontal blue curved rectangle

Our Sponsors

Orange circle

Get in touch with us

Astghik will get back to you :)

Barcelona, Spain
Mossy Ventures angel investing group and startup funding organization in Seattle, WA logo
What an amazing program! I joined it "knowing" what the discussions would be about. And I was surprised not only by the conversations' content but about what I learned about investing and my investment thesis. My favorite question was asked in Session 16, by a fellow participant " As investors, do you want to be seen as the investor that invested in X, or the investor that invested in Y"? This question helped solidify my choice. "

Astghik Zakharyan

Co-founder of SIA

Astghik is the co-founder of SIA, and is responsible for European operations. Prior to her work in the Investment ecosystem, she has co-founded several startups worldwide herself.

Need a little more information?

If you still have a question unanswered, feel free to send it to us and we'll be happy to answer it. If you can't find the answer, please fill out the form found here.

What do I get from the program?

Expanded knowledge, a global network, and potentially, an investment.

What does the program fee of $1000 cover?

Buying this Reserved Program Fee Ticket "reserves" an investment slot for you in Company/Investor Due Diligence program. The ticket price will cover the staff costs and backend service fees for the 3-month program. You get access to all of the workshops, tools, and the final event.

Is there a minimum investor net worth requirement?

In Europe, the participants should either have €100,000 net worth OR €50,000 annual income. In USA & Canada, the numbers are $1,000,000 (TNW) OR $200,000 annual salary.

What is special about this program?

This program is a learn by doing event. While there are many company accelerators, this is an investor accelerator which also provides you an investment for your portfolio.
Angled blue rectangleOrange circleYellow circleAngled grey half circle