Press Release 07 Dec 2016 MAYNARD, Mass., Dec. 7, 2016 - Acacia Communications, Inc. (NASDAQ: ACIA), a leading provider of high-speed coherent optical interconnect products, today announced that it has established headquarters in Limerick, Ireland, for its Europe, Middle East, Africa, Asia Pacific (EMEA-APAC) operations. The company anticipates that its EMEA-APAC headquarters will create thirty new jobs in Limerick. The project is supported by the Department of Jobs, Enterprise & Innovation through the Industrial Development Agency (IDA) Ireland.Acacia’s corporate headquarters are located in Maynard, Massachusetts, and its workforce is predominantly located in the United States. The Limerick facility will offer geographic diversity making it easier for Acacia to interact with its customers and suppliers in the EMEA-APAC regions. As such, the Limerick facility will primarily support functions such as sales, supply chain, and finance.“Ireland’s highly-skilled workforce, expansive infrastructure and pro-business environment, specifically in the Limerick area, makes it an ideal location for Acacia’s EMEA-APAC headquarters,” said Colm Cryan, Managing Director of Acacia’s Irish subsidiary. “We are delighted to be here and appreciate the welcome that we have received from the local agencies and companies.”Ireland’s highly-skilled workforce, expansive infrastructure and pro-business environment, specifically in the Limerick area, makes it an ideal location for Acacia’s EMEA-APAC headquarters. We are delighted to be here and appreciate the welcome that we have received from the local agencies and companies.Colm Cryan, Managing Director of Acacia’s Irish subsidiary.Welcoming the new investment by Acacia Communications, Ireland’s Minister for Jobs, Enterprise & Innovation, Mary Mitchell O’Connor said, “This is a great boost for Limerick and the Mid West region and it fits well with my remit to ensure a good spread of jobs across Ireland. These are exactly the kind of high quality technical jobs that we seek to attract and it is a strong vote of confidence for Ireland that Acacia has decided to establish its headquarters for the EMEA-APAC area here. We have a thriving ICT sector here, which we are keen to expand, especially into new niche areas and Acacia's decision fits perfectly with the Government's job creation strategy."Martin Shanahan, CEO of IDA Ireland, said: “IDA is delighted to see this growing and highly innovative company establish its EMEA-APAC headquarters in Limerick. This investment represents a valuable addition to the telecommunications sector in Ireland. It also enhances Limerick’s reputation as an excellent location for high growth technology companies, which increases the potential for future such investment in the region. I wish Acacia every success.”About Acacia CommunicationsAcacia Communications develops, manufactures and sells high-speed coherent optical interconnect products that are designed to transform communications networks through improvements in performance, capacity and cost. By leveraging silicon technology to build optical interconnects, a process Acacia refers to as the “siliconization of optical interconnect,” Acacia is able to offer products at higher speeds and density with low power consumption, that meet the needs of cloud and service providers and can be easily integrated in a cost effective manner with existing network equipment. www.acacia-inc.com.