MobileIron, an enterprise mobility management and mobile security company, just announced that it has closed a Series F round, raising $48 million.¹ Closing a round is standard for Mountain View companies, and a $48 million round is large but not out of the ordinary. However, the “Series F” part of the announcement stands out. Although a Series F is not unheard of, it is relatively rare.² With MobileIron’s series F round as a prompt, here is a look at some of the largest rounds of 2013 so far:³

Largest Rounds of 2013 Thus Far:

Seed Round:

According to CrunchBase, Pivotal raised a $105M seed round in May of 2013.⁴ This round is rather unique as GE bought a 10 percent stake in Pivotal for the same $105M price just one month prior to the seed round.⁵ So what is Pivotal, and why did GE invest in the company?

Pivotal has several different enterprise offerings including: data management and analytics, application and data infrastructure as a service, data consulting, but its core technology is the Platform-as-a-Service offering Pivotal Cloud Foundry.⁶ Pivotal CF allows enterprise customers to rapidly create applications using their immense data sets.

Series A Round:

According to CrunchBase and a company press release, AirWatch secured a $200M Series A round in February of 2013.⁷ AirWatch is an enterprise mobility company that enables, “IT departments to easily deploy, configure, secure, manage and support smartphones and tablets across multiple mobile platforms and operating systems while securing applications and content.”⁸

Series B Round

On Aug. 1, 2013, HootSuite announced the closing of a $165 Million Series B Round.⁹ The four year old social media management platform has more than 7 million users, including 237 of the Fortune 500 companies.¹⁰ HootSuite allows users to manage their Facebook, Twitter, LinkedIn, and Google+ profiles and pages from one platform.

Series C Round

Uber announced on Aug. 23, 2013, that they closed a $258M Series C round.¹¹ While there has been some controversy around the ride on demand startup, Uber was valued at around $3.4 billion prior to the C Round.¹² For all the negative press and publicity, Uber is popular and looks to remain so.

Series D Round

In Feb. 2013, Pinterest raised a $200 Million Series D Round, on a valuation of $2.5 billion.¹³ It is interesting to note that the visual social network raised less than and had a lower valuation than Uber’s C Round, above. The lesser valuation is a product of there being an amount ambiguity, at least in public statements, concerning companies revenue model, though this is made up for with around 50 million unique monthly users.¹⁴

Series E Round

On 9 October 2013, Flipkart announced, via a Tweet from their CEO, that they had closed a $360M Series E Round.¹⁵ Flipkart is a massive Indian eCommerce marketplace, or “The Amazon of India.”

Series F Round

The largest Sereis F round of 2013 would have been Intrexon at $150M in May, but they filed for and held an IPO in August.¹⁶ Therefore, Proteus Health has raised the largest F Round of 2013, so far.

On 1 May 2013, Proteus Digital Health closed a $62.5 Series F Round.¹⁷ Proteus offers an incredibly unique “Digital Health Feedback System.”¹⁸ The system, “[I]ncludes wearable and ingestible sensors that work together to gather information about medication-taking, activity and rest patterns.”¹⁹ Also, for what its worth, The CEO of Proteus has an amazing name.

Series G Round

Series G rounds are rare, with CrunchBase listing only 10.²⁰ The case of the LivingSocial raise is a little convoluted. At first, it appeared as though the Series G was a debt-round, but the company later clarified the reports and released more documentation.²¹ It seems as if the Series G was more of a last ditch effort to save the company, rather than a round to spur growth or expand.

There you have it, the largest rounds of 2013 thus far, though It is hard to imagine that this list will remain the same at the end of 2013.