Long-term private investment firm
Red Iron Group
- HeadquartersMenlo Park, CA S1
- Websiteredirongroup.com
- Last verifiedNovember 2, 2026
At a glance
| EBITDA range | Up to $20M S2 |
|---|---|
| Revenue range | Up to $150M S2 |
| Deal types | Platform, Growth, Add-on S2 |
| Sectors | Accounting & Professional Services, Healthcare Services, Construction Services, Consumer & Food |
What Red Iron Group buys
Red Iron Group is a Menlo Park, California investor with an office in Newport, Rhode Island. It backs lower middle market services businesses, from field services to office-based knowledge work, with annual revenue of up to $150 million and EBITDA of up to $20 million. It wants proven profits, organic growth and customers who come back, and it builds its plan for each company around technology and AI upgrades delivered by an in-house operating team called RIG Builders. Its money comes from endowments, pension plans, family offices and foundations, and it says it has no fixed exit timeline.
Each deal is shaped around the owner. Red Iron says it can buy part or all of a company, and in its announced deals the founders and managers kept significant ownership. Current holdings include Charter Impact, CORE Safety Group, Nevergreen Pools, the FinOps Holdings group of outsourced accounting firms (Hiline, Graphite and Engine Room) and RIG Franchise Holdings (EverLine Coatings, 100% Chiropractic and Limitless Fitness). Smaller firms can meet Red Iron as add-ons, as EdFinMN did with Charter Impact in January 2026.
Recent deals
Announced in the 24 months before November 2, 2026.
| Date | Company | Type | Sector | Source |
|---|---|---|---|---|
| May 2026 | Engine RoomGrowth investment in a Pleasanton, California finance and accounting firm for venture-backed life science companies; the co-founders stay on as significant owners | Growth | Accounting & Professional Services | Source |
| Jan 2026 | EdFinMNMinneapolis back-office firm for charter schools added to Charter Impact; its leadership and staff stay in place | Add-on | Accounting & Professional Services | Source |
| Nov 2024 | Charter ImpactLong-term investment in a back-office and student data services provider for charter schools and nonprofits; the co-CEOs stay on as owners | Investment | Accounting & Professional Services | Source |
Portfolio by sector
From the firm's portfolio page S3.
FinOps Holdings
- Engine Room
- Graphite Financial
- Hiline
Investments
- Charter Impact
- CORE Safety Group
- Nevergreen Pools
RIG Franchise Holdings
- 100% Chiropractic
- EverLine Coatings & Services
- Limitless Fitness Group
Greymont’s take
How Red Iron Group fits a seller
Red Iron fits the owner of a growing services company, especially in outsourced finance and back-office work, safety consulting or franchising, who wants to take some money off the table but keep a meaningful stake and help lead the next phase. Its releases show founders staying in charge after each deal, and its capital is set up for long holds rather than a standard fund life, which lowers the pressure for a quick resale.
The trade-off is a very hands-on partner. RIG Builders works inside portfolio companies on technology, AI, sales and hiring, so an owner should ask what that team expects to change in the first year and whether the company pays for that support. Owners should also ask whether Red Iron is taking control or a minority stake in their deal, since its announcements do not say.
Questions owners ask
What size companies does Red Iron Group invest in?
Its criteria call for annual revenue of up to $150 million and EBITDA of up to $20 million, in services businesses with a record of profits, organic growth and recurring or repeat customers.
How long does Red Iron hold its companies?
It says it does not work to a set fund timeline. Its May 2026 Engine Room release describes a capital base meant to hold companies for decades instead of the usual fund life.
Does the founder stay involved after a Red Iron investment?
In its recent announcements, yes. At Charter Impact, Engine Room, EverLine Coatings and 100% Chiropractic, the founders or co-CEOs kept running the business and stayed owners alongside Red Iron.
What is RIG Builders?
RIG Builders is Red Iron's in-house team of operators. It works with each portfolio company's leaders on technology and AI, sales and marketing, hiring and service delivery, starting when the deal closes.
Sources
- S1Red Iron Group home page Accessed November 3, 2026
- S2Red Iron Group: Our Approach (investment criteria and partnership structure) Accessed November 3, 2026
- S3Red Iron Group: Our Investments Accessed November 3, 2026
- S4Red Iron Group: Our Story (founders and investors) Accessed November 3, 2026
- S5Red Iron Group Invests in Engine Room (PR Newswire, May 20, 2026) Accessed November 3, 2026
- S6Charter Impact Acquires EdFinMN (January 13, 2026) Accessed November 3, 2026
- S7Red Iron Group Announces Strategic Investment in Charter Impact (November 4, 2024) Accessed November 3, 2026
- S8EverLine Coatings and Services Receives Strategic Investment from Red Iron Group (October 30, 2024) Accessed November 3, 2026
- S9Red Iron Group partners with 100% Chiropractic (June 5, 2024) Accessed November 3, 2026
- S10Red Iron Group news releases on PR Newswire Accessed November 3, 2026
Compiled by Greymont Advisors from public sources, including the firm’s own website and press releases. Greymont is not affiliated with Red Iron Group. Figures are as reported on the dates shown and may have changed. Request a correction