Cambridge Savings Bank (CSB), a full-service mutual bank with a customer-first approach and more than $5 billion in assets, today announces a $500 thousand direct investment in Coastal Ventures V LP, a socially responsible venture capital fund managed by CEI Ventures. Located in Brunswick, ME, CEI Ventures, a subsidiary of Coastal Enterprises, Inc. (CEI), a non-profit community development financial institution (CDFI) and innovative leader in rural business development, is one of the only venture capital firms in the U.S. with a mission focus and proven strategy to help create jobs that offer basic benefits such as PTO, health benefits and retirement savings.