24
THE DAVEY BULLETIN
|
September/October 2026
Kristina Amerson has been promoted
to manager, Early Talent Acquisition,
corporate offi ce. She most recently
served as specialist, Early Talent Acqui-
sition, corporate offi ce.
Stacey Greenwell has been promoted
to vice president, Health and Safety
department, corporate offi ce. She
most recently served as vice president
of Health and Safety Risk and Com-
pliance, associate general counsel,
corporate offi ce. Greenwell joined
Davey in 2018 as corporate counsel,
corporate legal department.She was
promoted to associate general counsel,
director of claims, in 2021.
Pat Ibarra has been promoted to ac-
count manager, SoCal Edison account,
Davey Tree Surgery Company. He most
recently served as supervisor, SoCal
Edison account, Surgery Company.
Andrew Koeser has been appointed
to research scientist, Davey Institute.
Koeser joins Davey with more than 20
years experience in arboriculture, urban
forestry, and applied tree research.
Jeremy Lewis has been promoted
to director, Health and Safety Training
Compliance. He most recently served
as manager, Health and Safety Training
Compliance.
Nick Serdy has been promoted to mar-
ket manager, Commercial Landscape
Services (CLS). He most recently
served as branch manager, Columbus
Commercial territory, CLS.
Kristina Amerson
corporate offi ce
Nick Serdy
CLS South Region
Pat Ibarra
SoCal Edison account
Jeremy Lewis
health and safety
department
Stacey Greenwell
corporate offi ce
PERSONNEL ANNOUNCEMENTS
Joanne Hill retired July 31, 2026,
following 28 years of service. She
started at Davey in 1998 as a secretary,
Wilmington offi ce, Residential/
Commercial (R/C) services. In 1999,
she became coordinator, Wilmington
offi ce, and stayed there until retirement.
Ken Joehlin retired June 30, 2026,
following 29 years of service. He
started at Davey in 1996 as a project
developer, Davey Resource Group
(DRG). In 2006, he became manager of
business development, Environmental
Consulting, DRG, and in 2010, he was
promoted to vice president of business
development, Environmental Consult-
ing, DRG. In 2016, he was later named
Vice President, DRG New Ventures,
and stayed in that role until retirement.
Ken Joehlin
Mark Noark retired August 15, 2026,
following 38 years of service. He
started at Davey in 1984 as foreman,
East Cleveland offi ce, R/C. In 2003,
he transitioned to recruiter, Human
Resources and Development, corporate
offi ce, and and held various roles in
Recruiting until 2018, when he
transferred to the Youngstown R/C
offi ce as a sales arborist and stayed
there until retirement.
Carol Watson retired Aug. 7, 2026,
following 35 years of service. She
started with North American Tree
Service, a Davey company, in 1992
as a sales arborist. She retired as
project manager.
Mark Noark Carol Watson
RETIREMENTS
Andrew Koeser
Davey Institute
