Exhibit 99.1

IHS Inc. Reports Third Quarter 2010 Results

ENGLEWOOD, Colo. (September 22, 2010) – IHS Inc. (NYSE: IHS), a leading global source of critical information and insight, today reported results for the third quarter ended August 31, 2010. Revenue for the third quarter of 2010 totaled $272 million, a 14 percent increase over third quarter 2009 revenue of $239 million. Net income attributable to IHS for the third quarter of 2010 was $34.6 million, or $0.53 per diluted share, compared to third quarter 2009 net income of $34.7 million, or $0.54 per diluted share. Third quarter 2010 reported results included a previously announced restructuring charge of $9.1 million, or $0.09 per diluted share.

Adjusted EBITDA (Earnings Before Interest, Taxes, Depreciation and Amortization) totaled $82.2 million for the third quarter of 2010, up 16 percent from $70.8 million in the third quarter of 2009. Adjusted earnings per diluted share were $0.76 for the third quarter of 2010, an increase of 15 percent over the prior-year period. Adjusted EBITDA and adjusted earnings per share are non-GAAP (Generally Accepted Accounting Principles) financial measures used by management to measure operating performance. Please see the end of this release for more information about these non-GAAP measures.

“We were very pleased to see the results of our efforts translate into improving organic revenue growth and record financial performance,” said Jerre Stead, IHS chairman and chief executive officer. “With the exciting additions of the Access Intelligence products, Atrion and Syntex, we made significant investments in the future success of our company.”

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Third Quarter 2010 Details

Revenue for the third quarter of 2010 totaled $272 million, a 14 percent increase over third quarter 2009 revenue of $239 million. The revenue increase was driven by 10 percent organic growth, five percent acquisitive growth, and was held down by foreign currency movements. The subscription-based business grew 6.5 percent organically and represented 77 percent of total revenue. Overall organic growth of 10 percent was also helped by growth from the non-subscription parts of the business as well as the inclusion of a once-every-three-year release of a certain engineering code. The company continued to grow its business overall in all three regions. The Americas (North and South America) segment increased its revenue during the third quarter by $22.7 million, or 15 percent, to $170 million. The EMEA (Europe, Middle East and Africa) segment grew its third quarter revenue by $5.4 million, or seven percent, to $78.0 million. The APAC (Asia Pacific) segment’s revenue was up $4.5 million, or 24 percent, to $23.7 million.

Adjusted EBITDA for the third quarter of 2010 was $82.2 million, up $11.4 million, or 16 percent, over the prior-year period. Operating income decreased $1.2 million, or two percent, to $45.1 million, due to the $9.1 million restructuring charge. The restructuring charge was split among the segments as follows: Americas included $7.7 million, EMEA included $1.3 million and the remainder was in APAC. Inclusive of the restructuring charge, Americas’ operating income decreased $1.7 million, or four percent, to $46.8 million (up 12 percent before the restructuring charge). EMEA’s operating income was up $2.0 million, or 14 percent, to $16.4 million (up 23 percent before the restructuring charge). APAC’s operating income grew $1.7 million, or 27 percent, to $8.0 million.

Year-to-Date 2010

Revenue for the nine months ended August 31, 2010, totaled $779 million, a 10 percent increase over year-to-date 2009 revenue of $710 million. Revenue growth was comprised of five percent organic, four percent acquisitive, and one percent from foreign currency movements. The subscription-based portion of the business grew 5.5 percent organically and represented 78 percent of total revenue. The company continued to grow its business overall in all three regions. The Americas segment increased its revenue year to date by $45.7 million, or 10 percent, to $490 million. The EMEA segment grew its nine-month revenue by $14.7 million, or seven percent, to $224 million. The APAC segment’s revenue was up $8.7 million, or 15 percent, to $65.1 million.

Adjusted EBITDA for year-to-date 2010 was $235 million, up $34 million, or 17 percent, over the prior-year period. Operating income increased $4.9 million, or four percent, to $131 million, primarily due to improving organic growth offset by the restructuring charge. Americas’ operating income increased $7.7 million, or five percent, to $148 million. EMEA’s operating income was up $6.6 million, or 16 percent, to $47.8 million. APAC’s operating income grew $3.0 million, or 17 percent, to $20.7 million.

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Net income attributable to IHS for the nine months ended August 31, 2010 increased $6.1 million, or seven percent, to $99.9 million, or $1.55 per diluted share.

Cash Flows

IHS generated $221 million of cash flow from operations during the nine months ended August 31, 2010, representing a 28 percent increase over last year’s $173 million.

Balance Sheet

IHS ended third quarter 2010 with $257 million of cash and cash equivalents and $144 million of debt.

“With the acquisitions announced today, we have deployed well over $1 billion of capital since our initial public offering almost five years ago,” stated Michael J. Sullivan, IHS executive vice president and chief financial officer. “Looking back, we have significantly expanded our offer set and created meaningful shareowner value through our deployment of capital, while maintaining over 75 percent of our revenue as subscription based.”

Third Quarter 2010 Restructuring

As previously announced, IHS recorded a $9.1 million restructuring charge in the third quarter of 2010 related to identified efficiencies from the streamlining of operations and merging of functions. Approximately three percent of the company’s current worldwide workforce was affected. IHS expects to realize an $8-10 million improvement annually to pre-tax income and adjusted EBITDA beginning in its fourth fiscal quarter of 2010, net of additional investments in profitable growth opportunities.

Outlook (forward-looking statement)

For the year ending November 30, 2010, IHS is increasing both its revenue and its Adjusted EBITDA guidance and expects:

For the year ending November 30, 2010, IHS also expects:

At the midpoint of its adjusted EBITDA guidance for 2010, IHS estimates $2.93 of adjusted earnings per share, based on a weighted average diluted share count of approximately 65 million. The aforementioned adjusted earnings per share figure assumes a tax rate of about 28 percent. The company’s GAAP tax rate is expected to be about 24 percent.

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For the year ending November 30, 2011, IHS expects:

The above outlook incorporates the savings related to the restructuring and assumes constant currencies and no further acquisitions or unanticipated events.

See discussion of adjusted EBITDA and non-GAAP financial measures at the end of this release.

As previously announced, IHS will hold a conference call to discuss third quarter and year-to-date 2010 results on September 22, 2010, at 3:00 p.m. MDT (5:00 p.m. EDT). The conference call will be simultaneously webcast on the company’s website: www.ihs.com.

Use of Non-GAAP Financial Measures

Non-GAAP results are presented only as a supplement to the financial statements based on U.S. generally accepted accounting principles (GAAP). The non-GAAP financial information is provided to enhance the reader’s understanding of our financial performance, but no non-GAAP measure should be considered in isolation or as a substitute for financial measures calculated in accordance with GAAP. Reconciliations of the most directly comparable GAAP measures to non-GAAP measures, such as adjusted EBITDA and adjusted earnings per diluted share, are provided within the schedules attached to this release.

EBITDA is defined as net income plus or minus net interest plus income taxes, depreciation and amortization. Adjusted EBITDA excludes non-cash items, gains and losses on sales of assets, restructuring charges and other items that management does not utilize in assessing our operating performance (as further described in the attached financial schedules). Adjusted earnings per diluted share exclude similar non-cash items as adjusted EBITDA. None of these non-GAAP financial measures are recognized terms under GAAP and do not purport to be an alternative to net income as an indicator of operating performance or any other GAAP measure.

Management uses these non-GAAP measures in its operational and financial decision-making, believing that it is useful to eliminate certain items in order to focus on what it deems to be a more reliable indicator of ongoing operating performance and our ability to generate cash flow from operations. As a result, internal management reports used during monthly operating reviews feature the adjusted EBITDA and adjusted earnings per diluted share metrics. Management also believes that investors may find non-GAAP financial measures useful for the same reasons, although investors are cautioned that non-GAAP financial measures are not a substitute for GAAP disclosures. EBITDA, adjusted EBITDA, and adjusted earnings per diluted share are also used by research analysts, investment bankers and lenders to assess our operating performance. For example, a measure similar to EBITDA is required by the lenders under our credit facility.

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Because not all companies use identical calculations, our presentation of non-GAAP financial measures may not be comparable to other similarly-titled measures of other companies. However, these measures can still be useful in evaluating our performance against our peer companies because management believes the measures provide users with valuable insight into key components of GAAP financial disclosures. For example, a company with greater GAAP net income may not be as appealing to investors if its net income is more heavily comprised of gains on asset sales. Likewise, eliminating the effects of interest income and expense moderates the impact of a company’s capital structure on its performance.

All of the items included in the reconciliation from net income to adjusted EBITDA are either (i) non-cash items (e.g., depreciation and amortization) or (ii) items that management does not consider to be useful in assessing our operating performance (e.g., income taxes, restructurings and gain on sale of assets). In the case of the non-cash items, management believes that investors can better assess our operating performance if the measures are presented without such items because, unlike cash expenses, these adjustments do not affect our ability to generate free cash flow or invest in our business. For example, by eliminating depreciation and amortization from EBITDA, users can compare operating performance without regard to different accounting determinations such as useful life. In the case of the other items, management believes that investors can better assess operating performance if the measures are presented without these items because their financial impact does not reflect ongoing operating performance.

IHS Forward-Looking Statements:

This release may contain forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that are not historical facts. Such statements may include financial projections and estimates and their underlying assumptions, statements regarding plans, objectives and expectations with respect to future operations, products and services, and statements regarding future performance. Forward-looking statements are generally identified by the words “expect,” “anticipate,” “believe,” “intend,” “estimate,” “plan” and similar expressions. Although IHS and its management believe that the expectations reflected in such forward-looking statements are reasonable, investors are cautioned that forward-looking information and statements are subject to various risks and uncertainties—many of which are difficult to predict and generally beyond the control of IHS—that could cause actual results and developments to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include those discussed or identified by IHS from time to time in its public filings. Other than as required by applicable law, IHS does not undertake any obligation to update or revise any forward-looking information or statements. Please consult our public filings at www.sec.gov or www.ihs.com.

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About IHS Inc. (www.ihs.com)

IHS (NYSE: IHS) is a leading source of information and insight in pivotal areas that shape today’s business landscape: energy, economics, geopolitical risk, sustainability and supply chain management. Businesses and governments around the globe rely on the comprehensive content, expert independent analysis and flexible delivery methods of IHS to make high-impact decisions and develop strategies with speed and confidence. IHS has been in business since 1959 and became a publicly traded company on the New York Stock Exchange in 2005. Headquartered in Englewood, Colorado, USA, IHS employs more than 4,400 people in more than 30 countries around the world.

IHS is a registered trademark of IHS Inc. All other company and product names may be trademarks of their respective owners. Copyright ^© 2010 IHS Inc. All rights reserved.

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IHS INC.

CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per-share amounts)

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IHS INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per-share amounts)

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IHS INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

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IHS INC.

SUPPLEMENTAL REVENUE DISCLOSURE

(In thousands)

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IHS INC.

RECONCILIATIONS OF NON-GAAP FINANCIAL MEASUREMENTS TO

MOST DIRECTLY COMPARABLE GAAP FINANCIAL MEASUREMENTS

(In thousands)

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IHS INC.

RECONCILIATIONS OF NON-GAAP FINANCIAL MEASUREMENTS TO

MOST DIRECTLY COMPARABLE GAAP FINANCIAL MEASUREMENTS

(In thousands)

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IHS INC.

RECONCILIATIONS OF NON-GAAP FINANCIAL MEASUREMENTS TO

MOST DIRECTLY COMPARABLE GAAP FINANCIAL MEASUREMENTS

(In thousands)

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IHS INC.

SUPPLEMENTAL INFORMATION

(In thousands, except per-share amounts)