Tim Sawyer

Chief Executive Officer

Tim SawyerTim joined Teligent Inc. as President and CEO in February 2020. He brings over 26 years of experience in the pharmaceutical industry, having held a variety of senior executive positions in general management, marketing and sales.

Prior to joining Teligent, Tim spent 16 years at Barr Laboratories, eventually serving as Executive Vice President, Global Generic Sales and Marketing where he led a team of nearly 2,000 employees in 25 countries. Subsequently, Tim held positions of Senior Vice President, Corporate Strategic Development at Mylan, and President, Retail Medicine at 1-800-Doctors, Inc.

Most recently, Tim served as Chief Executive Officer of Geritrex, LLC, a manufacturer and marketer of generic over the counter pharmaceuticals.

Tim holds a B.A. in Political Science from the University of Richmond.

Chief Legal Officer and Corporate Secretary

Phil joined Teligent, Inc. as Chief Legal Officer and Corporate Secretary in July 2020.  He brings extensive experience to Teligent as a general counsel/chief legal and compliance officer with pharmaceutical, biotechnology and healthcare companies.

Prior to joining Teligent, Phil spent five years as Chief Legal and Compliance Officer of Sovereign Medical Services, Inc., a privately held fully integrated community healthcare system company.  Prior to his position at Sovereign, Phil held several senior executive positions at Savient Pharmaceuticals, Inc., a publicly-held specialty biopharmaceutical company from 2004 to 2014, including Co-President, Chief Business Officer, Executive Vice President, General Counsel and Secretary from 2004 to 2014.

Phil holds a J.D. from the California Western School of Law and a B.A. from George Washington University.

Chief Financial Officer

Ernie De PaolantonioErnie joined Teligent as Chief Financial Officer in April 2021 and brings over 40 years of financial and business experience in the pharmaceutical industry.

Most recently, Ernie served as Chief Financial Officer of Fortovia Therapeutics Inc., a privately held healthcare company providing support to cancer patients and their families.  Prior to his position at Fortovia, he served as Chief Financial Officer, Secretary and Treasurer at BioDelivery Sciences International, Inc., a publicly-held specialty pharmaceutical company from 2013 to 2019.   Prior to his position with BioDelivery Sciences, he served as the Chief Financial Officer of CorePharma LLC, a private specialty generic company, and held finance and controllers’ positions in roles of increasing responsibility at Colombia Laboratories.

Ernie received his Bachelor of Arts Degree from Lycoming College; his MBA in Finance at Saint Joseph’s University and is a licensed CPA.

Vice President, Sales and Marketing
General Manager, Canada

Mark Mantel

Mark joined Teligent in 2018 as our General Manager of Canada. In this role, he is responsible for customer engagement, product development, quality assurance, regulatory affairs, and building our vision for Teligent Canada. In addition, he actively liaisons with our supplier partners and European colleagues to drive integration across our business units.


In 2019 Mark undertook new responsibilities and is now leading our North American Commercial Sales and Marketing Group in addition to his role as General Manager in Canada. In this role, Mark is responsible for delivering global sales results, new customer development, new product launch execution, and new channel development in all Teligent commercial markets.

Mark also works closely with our operations group at our manufacturing facility in New Jersey to ensure quality of supply, new product development, and growth of the newest topical and injectable facility in the USA.

Mark has gained experience from multiple industries, such as working with Coca Cola, Campbell’s Soup, Roche Diagnostics, Mylan Pharmaceuticals, and Mint Pharmaceuticals.

Mark is a graduate of the British Columbia Institute of Technology with a certificate in Marketing Management.



General Manager & Vice President of Operations

Antonio Di Nicola joined Teligent Inc. as the General Manager and Vice President of Operations at Teligent, Buena sterile manufacturing facility in May 2019. He has over 30 years of experience in managing and directing functional teams engaged in the aseptic manufacturing process of parenterals, ointments, nasal spray, and ophthalmic products. His successes include managing and implementing several initiatives to increase efficiencies and plant productivity.

Before joining Teligent, Antonio has held positions of increased responsibility, which include Plant Manager at Renaissance, LLC, Director of Operations at DPT Labs, Director of Operations at West-Ward Pharmaceuticals, Associate Director of Manufacturing at Baxter Healthcare, and Manager of Product Compliance at Wyeth-Ayerst.

Antonio holds a BS in Nautical and Maritime Science from the Italian Naval Academy.

William Graham has joined Teligent in October of 2020 to run the quality organization.  William comes with prior experience running quality at Renaissance Pharmaceuticals and West-Ward Pharmaceuticals.  He will play a key part in maintaining and promoting a quality-first mindset in all that we do at Teligent.

Vice President of R&D

Devendra Shah is Vice President of R&D at Teligent where he leads the product and analytical development of our topical and Injectable products. He has over 25 years of experience leading R&D teams engaged with drug product development and development and validation of analytical methods for regulatory filings. His development portfolio includes experience with API, oral, topical and sterile dosage forms.

Devendra has been working at Teligent since June 2010, incrementally expanding his responsibility from Manager of Analytical Development to Director of Product Development. Before joining Teligent, Devendra led the Analytical Development department at Sun Pharmaceutical Industries Limited and Actavis Totowa LLC.

Devendra holds an MS in Organic Chemistry from the M.S University of Baroda, India.