Biography

Mike Grygo is a Senior Fixed Income Analyst at Loomis, Sayles & Company, where he focuses on municipal bond credit research. He joined Loomis Sayles in 2021 and has 21 years of investment industry experience, including municipal credit roles at Allstate Investments. Mike earned a BS from the University of Illinois and an MBA from DePaul University. He is actively involved in the municipal finance community, having held leadership positions with the Chicago Municipal Analysts Society, and currently serves as Treasurer of the National Federation of Municipal Analysts.

Latest Insights by Michael Grygo

Alpha Engine Perspectives
June 22, 2026 • 2 min read

Sustainability and Munis: Finding the Signals That Matter

Explore how sustainability factors fit into municipal bond research, from climate risk to governance and long-term credit quality.
Municipal Bond

About the Credit Research Team

Investors on the Credit Research team

Shannon O'Mara, CFA
Shannon O'Mara, CFA
Head of Credit Research
Derek Endsley
Derek Endsley
Senior Credit Research Analyst
Bedford Lydon, III
Bedford Lydon, III
Senior Credit Research Analyst
Allison Bretz
Allison Bretz
Senior Credit Research Analyst
Joe Prestamer
Joe Prestamer
Credit Research Analyst
Vas Karanxha
Vas Karanxha
Credit Research Associate
Kelly Cruse
Kelly Cruse
Director of Municipal Research
Catherine Ferri, CFA
Catherine Ferri, CFA
Senior Credit Research Associate
Kristen Moldovan, CFA
Kristen Moldovan, CFA
Credit Research Analyst
Jamal Pulley
Jamal Pulley
Senior Credit Research Analyst
Bryce Stocks, CFA
Senior Credit Research Analyst
James Davie, CFA
James Davie, CFA
Senior Credit Research Analyst
Tim Lambert, CFA
Tim Lambert, CFA
Senior Credit Research Analyst
Kathyrn Coburn
Kathyrn Coburn
Credit Research Analyst
Alex Palfrey, CFA
Senior Credit Research Analyst
Will Jessiman, CFA
Will Jessiman, CFA
Credit Research Analyst
Kenny Vallace, CFA
Kenny Vallace, CFA
Credit Research Analyst
Justin Ward, CFA
Senior Credit Research Analyst
Syed Ahsan Ali Kazmi
Syed Ahsan Ali Kazmi
Senior Credit Research Associate
Kathy Raphael
Kathy Raphael
Senior Credit Research Analyst
Jessica Brenek
Jessica Brenek
Senior Credit Research Associate
Saahit Valiveti, CFA
Saahit Valiveti, CFA
Credit Research Analyst
Alfred Parker
Alfred Parker
Credit Research Analyst
Megan Giambanco
Megan Giambanco
Senior Credit Research Associate
Sean Murray, CFA
Credit Research Analyst
Alex Greenberg
Credit Research Analyst
Matt Welch, CFA
Matt Welch, CFA
Senior Credit Research Analyst & Business Manager
Joanne McIntosh
Joanne McIntosh
Director of Investment Grade Credit Research
Ryan McGrail
Ryan McGrail
Director of Leveraged Finance Credit Research
Ken Heffner, CFA
Ken Heffner, CFA
Senior Credit Research Analyst
Alex Tran
Alex Tran
Senior Credit Research Analyst
Paul Batterton, CFA
Paul Batterton, CFA
Senior Credit Research Analyst
Shelly McNulty
Shelly McNulty
Senior Credit Research Analyst
David Lapierre, CFA, CAIA
David Lapierre, CFA, CAIA
Senior Credit Research Analyst
Greg Schantz, CFA
Greg Schantz, CFA
Senior Credit Research Analyst
Nada Oulidi, CFA
Nada Oulidi, CFA
Senior Credit Research Analyst
Meredith Pallone
Senior Credit Research Analyst
Julian Wellesley, CFA
Julian Wellesley, CFA
Senior Credit Research Analyst
Zahiye Yuksel
Senior Credit Research Analyst
Spyros Katsaros, CFA
Spyros Katsaros, CFA
Senior Credit Research Analyst
Colin Wilson Murphy
Colin Wilson Murphy
Senior Credit Research Analyst
Jeremy Teng
Senior Credit Research Analyst
Zhi Wei Feng
Senior Credit Research Analyst
Ksenia Edwards, CFA
Ksenia Edwards, CFA
Senior Credit Research Analyst
David Xia
David Xia
Senior Credit Research Analyst
Paul Hanson
Paul Hanson
Senior Credit Research Analyst
Chris Keller, CFA
Senior Credit Research Analyst
James Barr, CFA
James Barr, CFA
Senior Credit Research Analyst
Sam Canelas
Sam Canelas
Credit Research Analyst