Plymouth Growth

What Plymouth Growth does

Straylight Capital (formerly Plymouth Growth) is a private growth equity investment firm founded in 2003 and headquartered in Detroit, Michigan. The firm invests $5–25 million per company into founder-led B2B technology companies with $3–13 million in revenue — a segment it describes as the "magnificent middle" — that are ready for next-stage growth but lack access to traditional coastal venture capital and private equity support. The firm positions itself between venture capital and traditional private equity, combining VC-style follow-on capital reserves with PE-level resources and transformational acquisition support.

The firm's offering is equity investment rather than a technology product: capital deployment, strategic guidance, sourcing of independent board members, go-to-market strategy support, and acquisition assistance for portfolio companies. Over more than a decade, the firm has deployed more than $400 million across 25+ current portfolio companies and reports impacting 40+ companies in total. Named portfolio companies include MentorcliQ (employee mentoring software), Forj (an AI/technology platform), and KnowledgeLake (document management). The firm is privately owned and founder-operated, with a small team of 1–10 employees including Director of Platform Alison Todak and Principal Kathleen Kaulins.

As a financial services firm, Straylight has no proprietary technology products, software platforms, or SaaS offerings. Its revenue mechanics come from equity ownership, value creation through operational support, and returns realized via portfolio exit events — not from per-customer fees or software subscriptions. Its go-to-market is direct and relationship-driven: targeted outreach to founder-led B2B tech companies plus inbound pitch deck submissions through the firm's website, with a limited digital presence anchored by a LinkedIn company page and an email newsletter.

Name

Plymouth Growth

Legal name

Straylight

Website

https://plymouthgp.com

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

1–10 employees

Short description

Straylight Capital (formerly Plymouth Growth) is a Detroit-based private growth equity firm that invests $5–25 million in founder-led B2B technology companies with $3–13 million in revenue, pairing capital with strategic and operational support.

Ownership category

akta.pro rank

Product category

Growth Equity Investment

NAICS

Portfolio Management and Investment Advice (52394), Other Financial Investment Activities (5239)

SIC

Investment Advice (6282)

akta.pro primary industry

Technology & Software Growth Equity (FSANACAA)

akta.pro secondary industry

Business Services (B2B) Growth Equity (FSANACAD)

Keywords

• Growth equity investment
• B2B technology funding
• Private equity capital
• Founder-led investing
• Transformational acquisitions

Headquarters

HQ city

Ann Arbor

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Revenue model

1. Growth Equity Investment Returns: The firm deploys capital ($5-25M checks typically) into founder-led B2B technology companies, generating returns through equity ownership, value creation, and exit events including acquisitions and sales.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Plymouth Growth (now operating as Straylight Capital) is a growth equity investment firm that deploys capital (typically $5-25M checks) into founder-led B2B technology companies with $3-13M in revenue that are ready for the next stage of growth. The firm operates between venture capital and private equity, combining VC-style follow-on capital reserves with PE-level resources and expertise to support transformational acquisitions, board-level guidance, and strategic partnership.

Product overview

Plymouth Growth (now Straylight Capital) is a growth equity firm, not a product company. The company provides growth equity investment services to B2B technology companies with $3-13M businesses. Their offering consists of capital deployment (typically $5-25M checks), strategic partnership, resources for portfolio companies, acquisition guidance, and board-level support. No distinct product modules, software platforms, or SaaS offerings exist in the traditional sense for this financial services firm.

Differentiator

Problem solved

Functional benefit

Products and services

• Growth Equity Capital Deployment Equity investment checks typically sized $5-25M deployed into founder-led B2B technology companies with $3-13M in revenue. For resilient founders seeking growth-stage capital, with the firm reserving follow-on capital like a venture fund.
• Strategic Partnership and Portfolio Support Hands-on engagement with portfolio company CEOs providing strategic insight, alternative viewpoints, and operational support. For founder-led B2B technology companies seeking more than capital from their investor.
• Transformational Acquisition Support PE-level guidance for portfolio companies pursuing acquisitions to accelerate growth. Includes sourcing, deal guidance, and post-acquisition integration support. For portfolio companies preparing for transformational growth.
• Independent Board Member Sourcing Source and introduce independent board members to portfolio companies to support go-to-market strategy and governance. For founder-led B2B technology companies building out leadership and oversight.

Quantifiable outcome

• 25+ current portfolio companies
• +2 more outcomes

Named customers3 records

Segments1 record

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators5 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• Mainsail Partners: Mainsail Partners is a growth equity firm focused exclusively on B2B software companies with $3-15M in revenue, making it the closest direct comparable to Straylight in target customer profile, check size, and value-add playbook.
• Edison Partners: Edison Partners invests growth capital in technology-enabled businesses with similar revenue ranges and growth-stage profiles to Straylight's targets. It operates with a similar founder-friendly, operationally engaged model in growth equity.
• Frontier Capital: Frontier Capital is a growth equity firm focused on B2B SaaS and tech-enabled services, with comparable check sizes and a similar mid-market, founder-centric approach to Straylight's positioning.
• Shoreline Equity Partners: Shoreline invests in lower middle-market B2B services and technology businesses, with comparable check sizes and a hands-on operating partner model that closely mirrors Straylight's approach.
• Trinity Hunt Partners: Trinity Hunt is a growth-oriented private equity firm investing in founder-led businesses with $3-15M in EBITDA, with comparable founder-friendly positioning and similar founder partnership ethos.
• Luminate Capital Partners: Luminate Capital Partners invests in mid-market software and tech-enabled services, with comparable founder-friendly growth equity approach and similar B2B tech target profile to Straylight.

Broad incumbents

• Summit Partners: Summit Partners is a large-scale growth equity firm investing across technology and B2B services at multiple stages. It is comparable as a broader incumbent in the growth equity category though it operates at a materially larger scale than Straylight.
• TA Associates: TA Associates is a global growth equity firm with deep technology and B2B software exposure. It is a relevant broad incumbent comparable in growth equity investing for B2B technology companies, though it operates at a much larger fund size.
• Insight Partners: Insight Partners is a large-scale software-focused growth and venture investor. It is a broad incumbent comparable in growth capital deployment to B2B tech companies, but operates at much larger check sizes than Straylight.
• Accel-KKR: Accel-KKR provides growth capital and buyout solutions to middle-market technology and B2B services companies. It is comparable as a mid-to-lower middle-market technology growth investor, though with a different control-oriented orientation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/3231762
• Xx.com/PlymouthGP

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments63 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Plymouth Growth