PROS : Q2 Investor Presentation

PROS Holdings, Inc.

Second Quarter 2023 Investor Presentation

Updated July 25, 2023 [e-mail]

Disclaimer / Forward-Looking Statements

This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements about our financial outlook; expectations; ability to achieve future growth and profitability; management's confidence and optimism; positioning; customer successes; demand for our software solutions; pipeline; business expansion; revenue; subscription revenue; ARR; non-GAAP earnings (loss) per share; adjusted EBITDA; free cash flow; shares outstanding and effective tax rate. The forward-looking statements contained in this presentation are based upon our historical performance and our current plans, estimates and expectations and are not a representation that such plans, estimates or expectations will be achieved. Factors that could cause actual results to differ materially from those described herein include, among others, risks related to: (a) the macroeconomic environment, (b) the effects of inflation, (c) the impact of the COVID-19 pandemic, (d) cyberattacks, data breaches and breaches of security measures within our products, systems and infrastructure or products, systems and infrastructure of third parties upon whom we rely, (e) increasing business from customers and maintaining subscription renewal rates, (f) managing our growth and profit objectives effectively, (g) disruptions from our third party data center, software, data, and other unrelated service providers, (h) implementing our solutions, (i) cloud operations, (j) intellectual property and third-party software, (k) acquiring and integrating businesses and/or technologies, (l) catastrophic events, (m) operating globally, including economic and commercial disruptions, (n) potential downturns in sales and lengthy sales cycles, (o) software innovation, (p) competition, (q) market acceptance of our software innovations, (r) maintaining our corporate culture, (s) personnel risks including loss of any key employees and competition for talent, (t) expanding and training our direct and

indirect sales force, (u) evolving data privacy, cyber security and data localization laws, (v) our debt repayment obligations, (w) the timing of revenue recognition and cash flow from operations, (x)

migrating customers to our latest cloud solutions, and (y) returning to profitability. Additional information relating to the risks and uncertainties affecting our business is contained in our filings with the SEC. These forward-looking statements represent our expectations as of the date hereof. Subsequent events may cause these expectations to change, and PROS disclaims any obligations to update or alter these forward-looking statements in the future, whether as a result of new information, future events or otherwise.

This presentation includes certain supplemental non-GAAP financial measures, that we believe are useful to investors as tools for assessing the comparability between periods as well as company by company. Our computation of these measures may not be comparable to other similarly titled measures computed by other companies. These non-GAAP financial measures should be considered in

addition to, but not as a substitute for, our financial information and results prepared in accordance with U.S. GAAP included in our periodic filings made with the SEC.

Investors are encouraged to review the reconciliation of our historical non-GAAP financial measures to the comparable GAAP results, which can be found, along with other financial information, on the investor relations' page of our website at PROS.com. We are unable to reconcile forward-lookingnon-GAAP financial measures to their directly comparable GAAP financial measures because the information needed to complete a reconciliation is unavailable at this time without unreasonable effort.

©2023 PROS, Inc. All rights reserved. Confidential and Proprietary

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PROS at a Glance

$290 mm+

Total Revenue

TTM Q2 2023

$38B+

Underpenetrated,

Addressable Market

84%

Recurring Revenue as a %

of TTM Q2 2023 Total Revenue

93%+

Customer Gross Revenue

Retention Rate TTM Q2 2023

14%

Subscription Revenue Growth

YoY Q2 2023

60+

Countries with

Customers

78%

Non-GAAP Subscription Gross

Margin Q2 2023; 635+ bps

Improvement in 8 Quarters

2.8T

Transactions Processed

TTM Q2 2023

©2023 PROS, Inc. All rights reserved. Confidential and Proprietary

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Business Overview

Our vision…

To optimize every shopping and selling experience.

©2023 PROS, Inc. All rights reserved. Confidential and Proprietary