Exhibit 99.1

February 11, 2015

Dear Fellow Shareholders:

We finished 2014 in stellar fashion with record quarterly revenues of $30.6 million and record quarterly adjusted EBITDA of $8.2 million, up 29% and 127% respectively. One of the many bright spots of the quarter was that core North American online revenues grew 19% to $14.9 million.

We ended 2014 with revenues of $106.2 million and adjusted EBITDA of $21.5 million, up 20% and 124% respectively. 2014 was a very good year in its own right, but more importantly it creates the strong foundation for sustained growth in 2015 and beyond. We have a large market opportunity as our customers continue their quest to become data-driven sales and marketing organizations. We believe we have world class IT purchase intent data to fuel this transition for our customers. We will continue to innovate new products with a focus on making this powerful data easy to use to help our customers increase market share.

Q4 and 2014 Results

Gross Margins

Total gross profit margin for Q4 2014 was 75%, compared to 72% for Q4 2013. Total gross profit margin for the full year 2014 was 74%, compared to 69% for 2013. Online gross profit margin increased to 77% in Q4 2014, compared to 74% for Q4 2013. Online gross profit margin increased to 75% in 2014, compared to 71% for 2013. Events gross profit margin increased to 64% for Q4 2014, as compared to 54% for Q4 2013. Events gross profit margin increased to 60% for 2014, as compared to 57% for 2013.

IT Deal Alert^TM Update

IT Deal Alert revenues were $4.5 million in the 4th quarter, up 62% from Q4 2013, but down approximately $300,000 from Q3 2014. IT Deal Alert revenue came in where we expected it would for the second half of the year, but the quarterly timing was slightly different. At the end of Q3, we had several large customers request accelerated delivery of IT Deal Alert Qualified Sales Opportunities. That pattern did not repeat itself in Q4 as companies did not want extra Qualified Sales Opportunities delivered during the holiday season. We will take this seasonality into account next year when forecasting Qualified Sales Opportunities revenue. We had 196 active IT Deal Alert customers in the quarter and quarterly renewal rate among our top 100 customers was 77% and the revenue renewal rate continues to be over 200%. More than 90% of IT Deal Alert revenue in 2014 came from IT Deal Alert Qualified Sales Opportunities.

While we are pleased that IT Deal Alert revenue grew 332% from $3.9 million in 2013 to $16.8 million in 2014, we believe that the opportunity is much larger. One of the things that we learned this year is that the different functions within our customers have different uses for our IT Deal Alert data. We recently introduced two new products to address this and have refined the positioning of Qualified Sales Opportunities to be specifically for Field and Channel sales teams.

The first new product we introduced is geared towards Data Scientists called IT Deal Alert Deal Data™. This is for customers that either do not use Salesforce.com or want a raw data feed so they can run their own analysis. Today, only our largest customers have data scientists, but we expect that number to grow over the coming years as our customers try to exploit big data for competitive gain.

Our second new product is called IT Deal Alert Priority Engine™. It is geared towards marketing departments and inside sales teams. This product is completely integrated into Salesforce.com, which the vast majority of our customers use as their sales and marketing platform. Priority Engine installs in minutes and makes it extremely easy to import, utilize and organize IT Deal Alert data within Salesforce.com. We have built tools within Salesforce.com that allow our customers to easily incorporate our data into the common tasks that are part of their regular sales and marketing workflow. Some examples of these include generating daily prioritized call lists for inside sales as well as optimizing common marketing campaigns such as seminar recruitment, event attendee follow up, named account marketing, and competitive conquest.

We sell subscriptions to Priority Engine in approximately 80 different technology segments. A quarterly subscription is $30,000 per segment and an annual subscription is $90,000 per segment. We introduced Priority Engine in January and we have already scheduled over 100 customer demos and we are pleased with the positive feedback that we are receiving. Since the sales cycle for Priority Engine is lengthier than Qualified Sales Opportunities, and revenue recognition for Priority Engine is pro-rata monthly, revenue will build over the course of the year.

We forecast that IT Deal Alert revenues will grow at least 50% in 2015.

Core North America Update

Core North American revenues grew 19% to $14.9 million in the quarter. I believe this is because when we talk to our customers about how we obtain our purchase intent data for IT Deal Alert, it reinforces the value of running branding and lead generation programs on our websites to influence IT buyers when they are early in the research process.

We expect North American core revenues to grow in the mid-single digits in 2015.

International Update

International online revenue was $9 million in Q4 2014, up 31%, representing 32% of online revenues. For 2014, core international revenues were up 22%, from $23 million to $28 million. International IT Deal Alert revenue grew over 600% to $2.5 million. Overall online international revenue grew 31% in 2014 to $30.6 million. We continue to execute very well internationally as we continue to deepen our relatively new relationships with our customers in the United Kingdom, France, Germany, Australia, Singapore and China. We continue to benefit from the secular shift of marketing budgets from offline vehicles such as print, trade shows, direct mail and telemarketing to online branding, lead generation and data.

For 2015, we expect international revenues to hit our long term target growth rate of approximately 20%.

Traffic Update

Organic traffic represented 94% of overall traffic in the quarter. Organic traffic was up over 20% in Q4. This return to strong organic traffic growth is consistent with our 15 year history that our in-depth, high quality, independent content is rewarded over the long run by changes to the Google algorithm.

Share Buyback

We bought 1,239,702 shares at an average price of $9.92 per share for a total expenditure of approximately $12.3 million during the 4^th quarter. We will continue to be opportunistic in regards to buying back shares. As of December 31, 2014, we had approximately $5 million available in our existing buyback program.

Balance Sheet and Cash Flows

The Company’s balance sheet remains strong. The Company has $38.2 million in cash and investments and no debt as of December 31, 2014.

We started the 4th quarter with $42.4 million in cash and investments, spent $12.3 million on share buybacks and ended the quarter with $38.2 million in cash and investments, in effect, generating over $8 million of cash in the quarter.

Foreign Exchange Update

Foreign Exchange had minimal impact in the 4th quarter and 2014. Approximately 90% of our revenues are billed and collected in US Dollars. In Q4, revenue growth was negatively impacted by approximately only 4 basis points due to currency fluctuations. We expect a similar ratio of revenues to be billed and collected in US Dollars in 2015.

Bruce Levenson Elected to the Board of Directors

I am thrilled that Bruce Levenson is rejoining the TechTarget Board of Directors. Bruce is the co-founder of UCG, one of the most successful B2B information providers in the market. UCG acquired Reliability Ratings in 1992, a subscription print content and events company that I founded in 1989. I was running that business for UCG, when we came up with the idea for TechTarget. We spun TechTarget out of UCG in 1999 with approximately $12 million in seed funding from Bruce and his partners at UCG. Bruce served on the TechTarget Board of Directors from 1999 through 2011. I’ve always valued his good ideas, experience, candor and long-term perspective. Bruce owns approximately 5.9% of the Company’s outstanding common stock.

Q1 2015 and 2015 Full Year Guidance

For Q1 2015, we expect to see the normal seasonality in our business. We expect overall revenues to be between $24.5 million and $25.6 million. We expect online revenues to be between $24 million and $25 million. We expect event revenues to be between $500,000 and $600,000. We expect adjusted EBITDA to be between $3 million and $3.8 million.

For 2015, we are operating under the assumption that the size of marketing budgets will be similar to 2014. We are forecasting total revenues between $120 million and $124 million and adjusted EBITDA between $28 million and $30 million for the full year.

We are forecasting that IT Deal Alert revenues will grow at least 50%, International revenues will grow approximately 20%, Core North America revenues will grow in the mid-single digits and Events revenues will decline in the mid-single digits.

Summary

We are very proud of our 2014 results. The IT market has been challenging over the past 5 years, to say the least. Our team has been very resilient as we have focused and invested aggressively on innovating the IT Deal Alert product platform and significantly increasing our international direct footprint. We’ve been able to accomplish this while generating strong cash flow that we have primarily used to bet on ourselves by buying back and retiring a large amount of our shares. 2014 was just the first year we started to see a payoff from our investments. I am personally more excited about 2015 and 2016.

(C) 2015 TechTarget, Inc. All rights reserved. TechTarget and the TechTarget logo are registered trademarks, and IT Deal Alert, Priority Engine and Deal Data are trademarks of TechTarget. All other trademarks are the property of their respective owners.

Conference Call and Webcast

TechTarget will discuss these financial results in a conference call at 5:00 p.m. (Eastern Time) today (February 11, 2015). Supplemental financial information and our Chief Executive Officer’s Letter to Shareholders will be posted to the Investor Information section of our website simultaneously with this press release.

NOTE: Our Chief Executive Officer’s Letter to Shareholders will not be read on the conference call. The conference call will include only brief remarks followed by questions and answers.

The public is invited to listen to a live webcast of TechTarget’s conference call, which can be accessed on the Investor Relations section of our website at http://investor.techtarget.com/. The conference call can also be heard via telephone by dialing 1-888-339-0724 (US callers), 1-855-669-9657 (Canadian callers) or 1-412-902-4191 (International callers). For those investors unable to participate in the live conference call, a replay of the conference call will be available via telephone beginning February 11, 2015 one (1) hour after the conference call through March 11, 2015 at 9:00 a.m. ET. To listen to the replay, for US, dial 1-877-344-7529 and use the conference number 10058778. Canadian callers should dial 1-855-669-9658 and also use the conference number 10058778. International callers should dial 1-412-317-0088 and also use the conference number 10058778. The webcast replay will also be available for replay on http://investor.techtarget.com/ during the same period.

Non-GAAP Financial Measures

This release and the accompanying tables include a discussion of adjusted EBITDA, adjusted net income and adjusted net income per share, all of which are non-GAAP financial measures which are provided as a complement to results provided in accordance with accounting principles generally accepted in the United States of America (“GAAP”).

“Adjusted EBITDA” means earnings before net interest, other income and expense, income taxes, depreciation and amortization, as further adjusted to exclude secondary offering costs, stock-based compensation and restructuring charges, if any.

“Adjusted net income” means net income adjusted for amortization, stock-based compensation, secondary offering costs and restructuring charges, if any, as further adjusted for the related income tax impact of the adjustments.

“Adjusted net income per share” means adjusted net income divided by adjusted weighted average diluted shares outstanding.

These non-GAAP measures should be considered in addition to results prepared in accordance with GAAP, but should not be considered a substitute for, or superior to, GAAP results. In addition, our definition of adjusted EBITDA, adjusted net income and adjusted net income per share may not be comparable to the definitions as reported by other companies. We believe that adjusted EBITDA, adjusted net income and adjusted net income per share provide relevant and useful information to enable us and investors to compare the Company’s operating performance using an additional measurement. We use these measures in our internal management reporting and planning process as primary measures to evaluate the operating performance of our business, as well as potential acquisitions.

The components of adjusted EBITDA include the key revenue and expense items for which our operating managers are responsible and upon which we evaluate their performance. In the case of senior management, adjusted EBITDA is used as one of the principal financial metrics in their annual incentive compensation program. Adjusted EBITDA is also used for planning purposes and in presentations to our board of directors. Adjusted net income is useful to us and investors because it presents an additional measurement of our financial performance, taking into account depreciation, which we believe is an ongoing cost of doing business, but excluding the impact of certain non-cash expenses and items not directly

tied to the core operations of our business. Furthermore, we intend to provide these non-GAAP financial measures as part of our future earnings discussions and, therefore, the inclusion of these non-GAAP financial measures will provide consistency in our financial reporting. A reconciliation of these non-GAAP measures to GAAP is provided in the accompanying tables.

Forward Looking Statements

Certain matters included in this press release may be considered to be “forward-looking statements” within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934, as amended by the Private Securities Litigation Reform Act of 1995. Those statements include statements regarding the intent, belief or current expectations of the Company and members of our management team. All statements contained in this shareholder letter, other than statements of historical fact, are forward-looking statements, including those regarding: guidance on our future financial results and other projections or measures of our future performance; our expectations concerning market opportunities and our ability to capitalize on them; and the amount and timing of the benefits expected from acquisitions, from new products or services and from other potential sources of additional revenue. Investors and prospective investors are cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, and that actual results may differ materially from those contemplated by such forward-looking statements. These statements speak only as of the date of this press release and are based on our current plans and expectations, and they involve risks and uncertainties that could cause actual future events or results to be different than those described in or implied by such forward-looking statements. These risks and uncertainties include, but are not limited to, those relating to: market acceptance of our products and services, including continued increased sales of our IT Deal Alert offerings and continued increased international growth; relationships with customers, strategic partners and our employees; difficulties in integrating acquired businesses; and changes in economic or regulatory conditions or other trends affecting the Internet, Internet advertising and information technology industries. These and other important risk factors are discussed or referenced in our Annual Report on Form 10-K filed with the Securities and Exchange Commission, under the heading “Risk Factors” and elsewhere, and any subsequent periodic or current reports filed by us with the SEC. Except as required by applicable law or regulation, we do not undertake any obligation to update our forward-looking statements to reflect future events or circumstances.

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Consolidated Statements of Operations

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Consolidated Balance Sheets

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Reconciliation of Net Income (Loss) to Adjusted EBITDA

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Reconciliation of Net Income (Loss) to Adjusted Net Income and Net Income (Loss) per Diluted Share to

Adjusted Net Income per Share

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Financial Guidance for the Three Months Ended March 31, 2015 and Year Ended December 31, 2015

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