Ramon Segismundo

Wyeth Pharmaceuticals LLC develops pharmaceutical, biotechnology and vaccine technologies. The company was registered on May 5, 2003 and is headquartered in Collegeville, PA.

Meralco Industrial Engineering Services Corp. provides general engineering, consulting, construction, operations and maintenance services. It specializes in electrical and mechanical facilities and infrastructure such as power transmissions, distribution systems and networks including development works, electro-mechanical and testing commissioning of substation equipment. The company was founded in December 1973 and is headquartered in Pasig City, the Philippines.

Aclara Meters Philippines, Inc. delivers energy and healthcare solutions. It also provides infrastructure enhancement, talent development, and corporate citizenship. The firm serves the aviation, energy management, power, oil and gas, healthcare, lighting, and transportation industries. The company was founded in 1890 and is headquartered in Taguig City, the Philippines.

CIS Bayad Center, Inc. operates as a payment outsourced industry. Its services include remittance, business center, and bills payment. The company was founded in 2006 and is headquartered in Pasig, Philippines.

One Meralco Foundation functions as a foundation. The private company is based in Pasig, Philippines.