Guideline

New York, New York, United States Information Technology Acquired

Guideline is a global provider of ad intelligence and media plan management technology for brands, agencies, publishers, broadcasters, and hedge funds. Through its Ad Intelligence and Media Plan Management suites, it aggregates verified billing and pricing data representing roughly $200 billion in annual global media spend across major markets, giving customers a single source of truth on advertising investment. Formed by combining Standard Media Index, SQAD, and Lumina under GTCR/Dreamscape backing, Guideline supports media planning, competitive benchmarking, pricing analysis, and investment research, and in 2026 launched an internal AI Factory to accelerate AI-driven product innovation across its platform.

Acquired

Guideline has been acquired

Acquired by Gusto November 3, 2025 $600M

This company is no longer available on our private secondary market.

Overview

Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.

Founded

2020

Employees

201–500

Total Funding

$344M

6 rounds

Latest Valuation

$1.15B

June 16, 2021

Funding

Total raised $344M across 6 rounds

Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.

Last updated 06-25-2026

Latest Round

Type

Series E

Date

June 16, 2021

Amount

$200M

Valuation

$1.15B

Lead Investors

General Atlantic
DateRoundAmount RaisedValuationLead Investors
June 16, 2021 Series E $200M $1.15B General Atlantic
July 1, 2020 Series D $85M $0.5B Generation Investment Management, Greyhound Capital
May 1, 2019 Series C $35M $2.5B Tiger Global Management

Funding by Round

Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.

Valuation Trajectory

Valuation indexed to 1.0× at the selected entry round. Valuation marks are estimates and may contain errors. Hover each dot to compare.

If you invested at:
0.5x 1x 2x 5x 2016 2018 2020 Guideline

Entry · Seed

$0.8B

Aug 2015

Guideline today

$1.1B

Jun 2021 · latest mark

Guideline multiple

1.5x

valuation uplift since first round

Y-axis is logarithmic. Hollow dots = estimated valuations. Does not represent realized investor returns.

Leadership

  • Vince Mifsud

    Chief Executive Officer

  • Scott Knoll

    Executive Chairman

Competitors

Competitor list is illustrative and may be incomplete, stale, or erroneous.

  • Betterment

    Digital wealth management and retirement planning platform offering 401(k) plans and IRAs

  • Fidelity Investments

    Large financial services company offering comprehensive 401(k) plans and retirement solutions

  • Vestwell

    Technology-enabled 401(k) and retirement plan provider for small to mid-sized businesses

  • Paychex

    Payroll and HR services provider offering 401(k) plan administration

  • ADP

    Payroll processing and HR solutions provider with 401(k) plan offerings

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Data collected with AI, which can make mistakes. Please double-check this information.