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Family offices

Co-investment

Invest alongside a sponsor or lead investor in a specific company or asset with independent underwriting and portfolio controls.

Quick answer

A co-investment is a direct investment made alongside a fund, sponsor, manager or other lead investor in a particular company or asset. It can provide deal-specific exposure and different fee economics, while requiring independent assessment of valuation, structure, conflicts, allocation, governance, concentration and exit terms.

Use the worked example

Meaning and transaction use

An SEC-filed prospectus defines direct investments made alongside a portfolio fund or manager and states that the adviser conducts its own diligence before investing. [S1]

Another SEC filing describes independent co-investment assessment of entry valuation, capital structure, thesis, value drivers and exit alternatives in addition to sponsor diligence. [S2]

Proposed control method: apply the family office's full underwriting, conflict and concentration tests to every co-investment.

Worked example

Illustrative co-investment only. Assume 4.0 million invested for 800,000 shares in a company with 20.0 million fully diluted post-closing shares.

Scroll the table horizontally to view all columns.

MeasureCalculationResult
Price per share4.0m / 800,0005.00
Post-closing sharesGiven20.0m
Ownership800,000 / 20.0m4.0%
Value at 7.50 per share800,000 x 7.506.0m

The illustrative co-investment owns 4.0% and would be valued at 6.0 million at 7.50 per share.

Proposed transaction review process

Screen access

Confirm sponsor, allocation, mandate fit and conflicts.

Underwrite independently

Test business, valuation, structure, downside and exit.

Negotiate rights

Review information, governance, transfer and follow-on provisions.

Monitor

Track thesis, sponsor actions, valuation, concentration and liquidity.

Evidence checklist

Opportunity

Sponsor materials, company data and allocation terms.

Underwriting

Independent market, financial, legal and tax review.

Rights

Security, governance, information, transfer and exit terms.

Portfolio

Concentration, liquidity, follow-ons and risk budget.

Decision framework

SituationProposed action
The sponsor timeline is shortPrioritise critical diligence or decline.
Information access is limitedReduce exposure or require protections.
Allocation creates concentrationResize under the approved portfolio limits.
A follow-on is offeredRe-underwrite price, need and ownership value.

Common errors to check

  • Relying solely on sponsor diligence.
  • Assuming fee savings imply better value.
  • Ignoring conflicts and allocation practices.
  • Underestimating follow-on and liquidity needs.

Underwrite the co-investment

Bring sponsor materials, company evidence and portfolio exposures to a co-investment review. Reconcile value, rights and concentration.

Discuss the transaction

Primary references and editorial scope

  1. SEC filing: Direct and co-investment definition
    Example direct investment alongside a fund manager and adviser responsibility for independent diligence. Reference checked 17 September 2026.
  2. SEC filing: Independent co-investment assessment
    Example independent review of valuation, structure, thesis, value creation and exit alternatives. Reference checked 17 September 2026.
Editorial qualification

General transaction education using public United States filings. Figures are hypothetical. Deal documents, mandate, regulation, tax and legal advice govern actual rights and outcomes.

General business information. Obtain advice appropriate to the legal, tax, accounting and financing facts. No offer, lender commitment or transaction outcome is represented. All worked examples use expressly assumed figures. Editorial draft date: 17 September 2026.

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