Brightcove, Avalon, Bit9, & More from the Boston Deals Roundup

Xconomy Boston — 

This last week’s New England deals spanned venture firms, biotechs, and mobile, social, and security software startups.

—Boston-based Brightcove (NASDAQ: BCOV), which provides hosting technology for digital content, signed an agreement to acquire San Francisco-based Zencoder, a provider of cloud-based video encoding services, for $30 million.

—EyeNetra, an MIT Media Lab developer of technology for mobile eye exams, has pulled in $1 million of a targeted $1.2 million equity round, an SEC filing shows.

—Waltham, MA-based security software maker Bit9 nabbed a $34.5 million Series D investment, led by new investor Sequoia Capital, and joined by return backers Atlas Venture, Highland Capital Partners, Kleiner Perkins Caufield & Byers, and .406 Ventures.

—San Francisco based mobile advertising and app distribution company Tapjoy gained a foothold in the Boston area with the acquisition of the core team of Viximo, a social gaming tools startup founded in 2007. Both startups share North Bridge Venture Partners as an investor.

—Cambridge, MA-based Mersana Therapeutics pulled in $27 million in Series A-1 funding from new investors Pfizer Venture Investments and New Enterprise Associates (NEA). Previous investors Fidelity Biosciences, ProQuest Investments, Rho Ventures, and Harris and Harris Group joined the deal, which comes as a recapitalization for Mersana.

—Avalon Ventures, the Cambridge- and San Diego-based investment firm that was an early backer of Zynga, is looking to raise at least $200 million for its 10th fund.

—TribeHR, a Canada- and Waltham-based maker of so-called social human resources software, announced this morning that it raised $2.5 million in a funding round led by Relay Ventures and joined by Matrix Partners. The company said the money will go toward social and mobile products and go-to-market strategy.

—WordStream, a Boston-based search engine marketing startup, raised a $6 million Series C round from previous investors Sigma Partners and Egan-Managed Capital. The company has raised a total of $16 million as it looks to expand its software and services for advertisers and small to medium-size businesses.