How PE Firms Find Add-On Acquisitions: 7 Sourcing Methods Compared

Last updated: October 7, 2026

Private equity firms find add-on acquisitions through seven channels: banker and intermediary coverage, the platform CEO's network, direct owner outreach, company databases, conferences and trade shows, outsourced origination firms, and buy-side search firms. Banker coverage brings you owners who have already decided to sell. Direct outreach and the CEO's network reach owners who are not running a process, so you can talk to them before an advisor sets a price or builds a buyer list.

Add-ons make up most US buyouts, so sponsors need a repeatable way to find them. In March 2025, PitchBook put add-ons at 74.1% of US buyouts, citing its Annual US PE Breakdown. Through Q3 2022, the US share had reached 77.9% of buyout deals, which PitchBook called "the highest ever recorded". In Europe, add-ons hit a decade-high 71.4% of buyout deal count in Q1 2026, up from 67.4% in 2025.

Why add-on sourcing differs from platform sourcing

A platform search looks for one company that can carry a thesis; an add-on program needs a repeatable flow of companies that fit an existing business, and PitchBook describes add-ons as "typically smaller and a lower-risk way to deliver growth through targeted M&A within the same vertical." US software shows the shift in value terms. According to PitchBook data, add-ons took about 45% of PE deal value in software in the first five months of 2026, more than doubling their share from last year, while platform deals fell to 41%, the lowest share in at least a decade.

Smaller targets change the sourcing math. An owner who has not hired a banker never appears on an intermediary's buyer list, so a program that waits for bankers sees the owners who chose to run a sale and misses the rest. We covered that coverage gap in how top-quartile PE firms source off-market deals and the target-universe build in buy-side mandates for PE pipelines. This post compares the channels.

How we chose these seven: together they cover the routes from a sponsor to an add-on owner: through an intermediary, through a relationship, through a list, or by calling and writing to the owner yourself. Each entry uses the same fields. The order is not a ranking. Our firm works in category 6.

The 7 add-on sourcing methods

1. Intermediary and banker coverage

How it works: Your deal team keeps a coverage list of sell-side bankers and business brokers in the platform's sector, shares the add-on criteria and stays in touch to land on their buyer lists. What it produces: Packaged deals with a CIM, financials and a process timeline. Pros: The seller has decided to sell, and diligence materials exist before you engage. Cons: Every buyer on the list sees the same deal, so you bid against them. Owners who never hire a banker never reach you this way. Best for: Sponsors who need finished deals now and can win on price or certainty of close.

2. The platform CEO's network

How it works: The platform CEO and senior team call competitors, suppliers and former colleagues they know, while the sponsor sets the criteria and tracks the pipeline. What it produces: A small number of warm conversations, often exclusive, with owners who know the CEO. Pros: The CEO brings credibility with owners and knows which competitors run well. Cons: Output caps at the CEO's relationships, and the calls compete with running the company. In a hard quarter, the company wins that contest. Best for: Platforms in tight industries, and as the closer on add-ons sourced through any other channel.

3. Direct owner outreach run in-house

How it works: An associate, a business development hire or a small team builds the target list and contacts owners by phone, email and letter. What it produces: First conversations with owners who were not running a process. Pros: You control the message, the list and the data, and conversations start before an advisor sets a price. Cons: Deliverability, list building and call discipline each need an owner on your team, and deal professionals pulled onto cold calls spend less time on deals. Best for: Sponsors with a sector thesis, several platforms in the same industry and budget for a dedicated hire.

4. Company databases

How it works: Analysts filter private-company databases by industry code, geography, headcount and ownership to build the add-on universe. What it produces: A list of companies, with no conversations attached. Pros: Fast to start and useful for sizing a market. Cons: Competing sponsors can license the same data. A record tells you a company exists; someone still has to reach the owner. Best for: The first version of the target universe, before any outreach runs.

5. Conferences and trade shows

How it works: The platform and deal teams attend the industry's trade events and meet owners in person. What it produces: Face-to-face introductions, plus a read on who is growing or struggling. Pros: You meet owners on ground they chose, and you learn the industry's informal map. Cons: Events come a few times a year and cost travel time. Follow-up after the show depends on someone owning it. Best for: Sectors with a strong trade association calendar, paired with a follow-up system.

6. Outsourced origination firms

How it works: An outside team builds the target universe against your add-on criteria, contacts owners, qualifies the replies and books meetings for your deal team or the platform CEO. What it produces: Qualified owner meetings with companies that match the buy box. Pros: You get outreach volume without hiring, and your team enters once an owner has agreed to talk. Cons: Results depend on the firm's list and its callers, and the firm needs your feedback on fit. Pricing models vary by firm. Best for: Sponsors and platforms that want a steady pace of owner conversations without building the function in-house.

Axia sits in this category. We build the target universe from a published directory of 200+ named sources across 11 families and verify owner contacts through a waterfall of 20+ data providers. Every dial comes from a U.S.-based caller we selected and trained. Each owner gets five attempts, ever, and our callers do not discuss price or what a company might be worth.

7. Buy-side search firms

How it works: You retain an advisory firm to run a search for a specific add-on profile. Scope varies by firm and can run from outreach and screening through transaction support. What it produces: A managed search toward a closed deal, with an advisor alongside you. Pros: One party owns the search, and the advisor can help with structuring once an owner engages. Cons: A mandate scoped to one target can end when that deal closes, and you restart the pipeline. Fee structures differ, so compare them firm by firm. Best for: Sponsors pursuing one specific, hard-to-find add-on who want advisory support through close.

Add-on sourcing methods compared

Method	What it produces	Who does the work	Cost structure	Exclusivity	Best for
Banker coverage	Packaged deals	Your deal team, relationship upkeep	Seller engages the banker	Low	Finished deals now
Platform CEO network	Few warm conversations	Platform CEO	CEO time	High	Tight industries, closing
In-house outreach	First conversations	Your hire or team	Salary plus tools and data	High	Multi-platform sector theses
Databases	Target lists	Your analysts	Subscription	None by itself	Sizing the universe
Trade shows	In-person introductions	Platform and deal team	Travel and event time	Medium	Association-heavy sectors
Outsourced origination	Qualified owner meetings	Outside callers and data team	Varies by firm	High	Steady owner conversations
Buy-side search firm	Managed search toward close	Outside advisor	Varies by firm	Medium to high	One hard-to-find target

How to combine the methods

A buy-and-build plan can run several channels at once:

Build the universe once. Count every company that fits the add-on criteria, using databases plus registries and licensing data.
Split the list. The platform CEO takes the owners they already know; everyone else goes into a structured outreach program, in-house or outsourced.
Keep banker coverage running. Packaged deals still close, and bankers who know your criteria can put you on their buyer lists.
Use trade shows as follow-up. Meet owners your outreach has already reached instead of starting cold on the floor.
Review fit every month. Mark each meeting fit or no fit and feed the answer back into the list.

Frequently asked questions

PitchBook put add-ons at 74.1% of US buyouts in a March 2025 article citing its Annual US PE Breakdown. Through Q3 2022, the US share reached 77.9% of buyout deals, which PitchBook called the highest ever recorded. In Europe, add-ons hit a decade-high 71.4% of buyout deal count in Q1 2026.

How do private equity firms get proprietary deal flow for add-ons?

Proprietary add-on flow comes from reaching owners before they hire an advisor: direct outreach to a counted target universe, the platform CEO's industry relationships, and outsourced origination firms that contact owners on the sponsor's behalf. Banker coverage brings deals other buyers also see, and a database supplies names rather than conversations.

Both, with different jobs. The platform CEO carries credibility with competitors and suppliers and should run the meetings. The sponsor or an outside team should own the target list and the outreach volume, because a CEO running a company cannot make hundreds of cold calls a quarter.

What is the difference between outsourced origination and a buy-side search firm?

Outsourced origination firms build the target list, run outreach and hand the sponsor qualified owner meetings; the sponsor runs everything after that. A buy-side search firm is an advisor retained to run a search toward a closed deal, and its scope can extend into transaction support. Fee structures vary by firm in both categories.

Over the long run, yes. In PitchBook's figures, the US add-on share rose from 68% of buyouts through Q3 2019 to a record 77.9% through Q3 2022, and PitchBook cited 74.1% in March 2025. In Europe, add-ons rose from 67.4% of buyout deal count in 2025 to 71.4% in Q1 2026. In US software, add-ons reached about 45% of PE deal value in the first five months of 2026, more than doubling their share from the year before.

Sources

If your platform needs more add-on conversations than your current channels produce, bring us the buy box.