| 5/5/2021 | IG | New Issue: Highmark sells $800 million of five-year, 10-year notes
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| 5/5/2021 | IG | S&P rates Highmark notes A-
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| 5/5/2021 | IG | Highmark sets talk for $800 million of five-year, 10-year notes
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| 5/27/2020 | IG | S&P corrects Highmark notes rating
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| 7/16/2018 | IG | DBRS lowers Inter Pipeline
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| 7/16/2018 | IG | Moody’s lifts Highmark debt
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| 3/9/2018 | IG | S&P upgrades Highmark
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| 3/21/2017 | IG | S&P changes Highmark to positive
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| 3/4/2014 | IG | S&P downgrades Highmark to A-
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| 4/10/2013 | IG | Moody's continues Highmark review
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| 1/24/2013 | IG | Moody's may cut Highmark
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| 6/25/2012 | IG | Moody's affirms Highmark
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| 3/30/2012 | IG | Moody's cuts outlook on Highmark to negative
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| 5/3/2011 | IG | New Issue: Highmark prices $600 million of notes in 10-, 30-year maturities
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| 5/3/2011 | IG | S&P rates Highmark debt A
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| 5/3/2011 | IG | Moody's: Highmark notes Baa2
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| 5/3/2011 | IG | Market Commentary: PepsiCo, Woodside, Highmark, Westfield among names in primary; new bonds firm; Altria tighter
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| 12/13/2010 | IG | S&P ups Highmark view to stable
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| 1/28/2009 | IG | Moody's: Highmark outlook stable
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| 10/29/2007 | IG | S&P affirms Highmark
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