When was Yammer founded?

Yammer was founded in 2008 and raised its 1st funding round within a year of its incorporation.

Where is Yammer located?

Yammer is headquartered in San Francisco, United States.

How many employees does Yammer have?

As of Sep 30, 2026, the latest employee count at Yammer is 32.

Is Yammer a funded company?

Yammer is a funded company, having raised a total of $142M across 6 funding rounds to date. The company's 1st funding round was a $***** Grant (prize money) round, raised on Sep 08, 2008.

How much is Yammer worth?

The last known valuation of Yammer was $***** as of Jun 29, 2017.

When was the latest funding round of Yammer?

Yammer's latest funding was a $***** Series E round on Mar 09, 2012, with participation from 10 investors.

Where does Yammer rank among its competitors?

Yammer ranks 4th amongst 231 active competitors, of which 35 are funded. It stands 1st in terms of total funding among its competitors. The most recent competitor to raise funding was Pluria, which secured $2M in May, 2026.

Who are the top competitors of Yammer?

Yammer's top competitors include Humand, Oak and Pluria. Among them, Pluria secured the most recent funding round in May, 2026.

Yammer - 2026 Company Profile, Team, Funding & Competitors

Q: Is Yammer an acquired company?

Yammer got acquired by Microsoft on Jun 25, 2012.

Yammer is an acquired company based in San Francisco (United States), founded in 2008 by Adam Pisoni and George Ishii. It operates as a Connect, collaborate, and make decisions faster across your organization. Yammer has raised $142M in funding from investors like SV Angel, Emergence Capital and USVP, with last known valuation of $*****. The company has 231 active competitors, including 35 funded and 20 that have exited. Its top competitors include companies like Humand, Oak and Pluria.

Company Details

Connect, collaborate, and make decisions faster across your organization. This platform fosters seamless communication and knowledge sharing, enabling better and faster decision-making. Discover valuable insights and progress updates, connecting front-runners and leaders across locations. Engage in meaningful discussions, accelerate workflows, and obtain quick answers from experts. Build upon existing work, avoid duplication, and leverage collective learnings to boost productivity. Collaborate within communities to share ideas and solve problems efficiently. Create relevant groups, find answers to specific questions, and securely collaborate with external partners. Keep documents, photos, and videos organized within conversations. Stay connected with the mobile app. This SaaS platform enhances organizational connectivity, collaboration, and knowledge management.

Website: yammer.com
Social

Key Metrics

Founded Year

2008

Location

San Francisco, United States

Stage

Acquired

Total Funding

$142M in 6 rounds

Latest Funding Round

Series E, Mar 09, 2012, $*****

Last Known Valuation

$***** as on Jun 29, 2017

Investors

SV Angel & 18 more

Ranked

4^th among 231 active competitors

Employee Count

32 as on Sep 30, 2026

Investment & Acquisitions

Assembled & 1 more

Similar Companies

Humand & 409 more

Exit Details

Acquired by Microsoft (Jun 25, 2012)

View Yammer's full profile

Yammer is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
YAMMER INC CIN: 26-3306069 , United States, Active	Dec 31, 2007	-	327 (As on Dec 31, 2012)	-

Yammer got acquired by Microsoft on Jun 25, 2012 at an acquisition amount of $*****.

Click here to take a look at Yammer's acquisition in detail

Yammer has raised a total funding of $142M over 6 rounds. Its first funding round was on Sep 08, 2008. Its latest funding round was a Series E round on Mar 09, 2012 for $*****. 10 investors participated in its latest round. Yammer has 18 institutional investors and 1 angel investor.

Here is the list of recent funding rounds of Yammer:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Mar 09, 2012	5898345	Series E	4422743	7115636	3880328	5658154
Sep 27, 2011	5855827	Series D	5919911	2937252	1463567	Social Capital & 3 more
Nov 30, 2010	9163784	Series C	9002660	8539534	USVP	Emergence Capital & 2 more

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View details of Yammer's funding rounds and investors

The founders of Yammer are Adam Pisoni and George Ishii.

Here are the details of Yammer's key team members:

Adam Pisoni: Co-founder & CTO of Yammer. They are also an angel investor in 4 startups.
Contact Info: 1 email address
George Ishii: Co-founder of Yammer and founder of 2 other companies, Comparably and Geni.

View details of Yammer's Founder profiles and Board Members

Yammer's employee count trend

Yammer has 32 employees as of Sep 26. Here is Yammer's employee count trend over the years:

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Top competitors of Yammer include Humand, Oak and Pluria. Here is the list of Top 10 competitors of Yammer, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Humand 2020, Buenos Aires (Argentina), Series A	Mobile-based suite solutions for enterprise collaboration	$66.5M	Kaszek, Goodwater Capital & 8 others	68/100
2nd	Oak 1994, Newcastle Upon Tyne (United Kingdom), Acquired	Intranet software to connect teams and engage people	$16.5M	Maven Capital Partners, Northstar Ventures ... & 4 others	64/100
3rd	Pluria 2020, Bucharest (Romania), Seed	Provider of managed flexible workspaces	$4M	Eleven, Sparking Capital & 3 others	64/100
4th	Yammer 2008, San Francisco (United States), Acquired	Connect, collaborate, and make decisions faster across your organization	$142M	Meritech, Emergence Capital & 17 others	59/100
5th	Interact 1996, Manchester (United Kingdom), Acquired	Intranet-based employee communications solutions provider	-	Octopus Ventures, Perwyn	60/100
6th	Haystack 2019, Santa Monica (United States), Series A	Cloud-based enterprise collaboration software	$10.2M	Greycroft, Coatue & 7 others	59/100
7th	Plek 2013, Amsterdam (Netherlands), Acquired	Collaboration and social networking software	-	-	48/100
8th	Kohort 2011, New York City (United States), Seed	Online social network platform for communities in enterprises	$2.96M	IA Ventures, Zelkova Ventures & 9 others	48/100
9th	Frond 2020, San Francisco (United States), Seed	Online social platform for conversations within communities using threads	$3.3M	Cherry Ventures, WndrCo & 20 others	44/100
10th	CubeTree 2008, Redwood City (United States), Acquired	Enterprise social network and collaboration	$11.5M	InterWest Partners, Trinity Ventures & 2 others	44/100