- The International Society of ArboricultureHereby Announces ThatMark Willard MalmstromHas Earned the CredentialISA Certified Tree ClimberBy successfully meeting ISA Certified Tree Climber certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing CouncilCaitlyn Pollihan CEO & Executive Director30 June 20269 May 2008RM-0460ATExpiration DateCertification NumberIssue Date

The International Society of Arboriculture
Hereby Announces That
Mark Willard Malmstrom
Has Earned the Credential
ISA Certified Tree Climber
By successfully meeting ISA Certified Tree Climber certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council

Caitlyn Pollihan
CEO & Executive Director
30 June 2026
9 May 2008
RM-0460AT
Expiration Date
Certification Number
Issue Date
Mark Willard Malmstrom
ISA Certification is a voluntary program that tests and certifies a professional’s achievement of a standard level of knowledge and skill in the field of arboriculture. When a professional becomes an ISA Certified Tree Climber, they should be recognized by their peers and the public as a tree care professional who has attained a generally-accepted level of knowledge in areas such as climbing, pruning, safety, and other subject and practice areas within the tree care profession as identified through periodic job task analyses.
Skills / Knowledge
- tree care
- tree pruning
- tree removal
- tree maintenance
- tree trimming
- tree climbing
- aerial rescue
- tree inspection
Issued on
May 9, 2008
Expires on
June 30, 2026
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