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SIOR Designee
Representing the elite top 1% of commercial real estate professionals, SIOR designees are recognized for their exceptional production, experience, and commitment to the highest standards of ethics and excellence. Designees specialize in industrial, office, sales management, executive management, and advisory services.
Member Associate
Commercial real estate professionals with 1–8 years of industry experience who are building their careers and working toward earning the prestigious SIOR designation through education, mentorship, and networking opportunities.
Affiliate Member
Companies providing products and services to the commercial real estate industry seeking to build relationships, increase visibility, and connect with SIOR’s elite global network of professionals. You may also use the following link to search our Affiliate Members.
Rob T. Martensen
Vice Chair - Industrial
COLLIERS
SIOR, CCIMSIOR Member since 2009
Consulting, Corporate Services, Distribution & Logistics, Investments, Landlord, Sale/Leasing, Tenant Representation2390 E Camelback Rd Ste 100, Phoenix, Arizona 85016-3468
Active Committees (0)
No active committees on record.
Past Committees (28)
- Industrial Member Steering Committee2025–2026
- Industrial Member Steering CommitteeCommittee Member · 2024–2025
- NominatingPast Regional Director · 2023–2024
- NominatingPast Regional Director · 2022–2023
- Regional DirectorsRegional Director - West · 2021–2022
- Chapter Leadership CouncilRegional Director - West · 2021–2022
- SIOR-Inland Empire & Orange County ChapterRegional Director · 2020–2022
- SIOR-Southern Nevada ChapterRegional Director · 2020–2022
- SIOR-Northern California / Northern Nevada ChapterRegional Director · 2020–2022
- SIOR-Greater Los Angeles ChapterRegional Director · 2020–2022
- SIOR-San Diego ChapterRegional Director · 2020–2022
- SIOR-Arizona ChapterRegional Director · 2019–2022
- Regional DirectorsRegional Director - West · 2019–2021
- Chapter Leadership CouncilRegional Director · 2019–2021
- Chapter Leadership CouncilCommittee Member · 2017–2019
- SIOR-Arizona ChapterPresident · 2017–2019
- Group Tax ExemptionCommittee Member · 2017–2019
- Chapter Leadership CouncilCommittee Member · 2015–2017
- SIOR-Arizona ChapterVice President · 2015–2017
- Group Tax ExemptionCommittee Member · 2015–2017
- SIOR-Arizona ChapterTreasurer · 2013–2015
- Group Tax ExemptionCommittee Member · 2013–2015
- SIOR-Arizona ChapterSecretary · 2013–2015
- SIOR-Arizona ChapterSecretary · 2013
- SIOR-Arizona ChapterTreasurer · 2013
- SIOR-Arizona ChapterAdmissions Chair · 2012
- SIOR-Arizona ChapterRetention · 2012
- SIOR-Arizona ChapterAdmissions Chair · 2011
Events Attended This Year (2)
- SIOR'S Fall 2026 EventOct 19, 2026
- 2026 Spring EventApr 14, 2026
Lifetime Events Attended (80)
- SIOR'S Fall 2026 EventOct 19, 2026
- 2026 Spring EventApr 14, 2026
- 2025 Fall EventNov 4, 2025
- 2025 Spring EventMay 6, 2025
- 2024 Fall EventOct 15, 2024
- 2024 Spring EventMay 6, 2024
- Fall 2023 EventOct 11, 2023
- 2023 Spring EventApr 26, 2023
- 2022 CREate 360Oct 19, 2022
- 2021 CREate 360Oct 14, 2021
- 2021 TransACT 360Apr 28, 2021
- Holiday Party in April at El ChorroApr 15, 2021
- Annual Spring Training Game 2021Mar 19, 2021
- Broadway Curve / Sky Harbor Improvement MeetingFeb 18, 2021
- Virtual Kick-Off EventFeb 4, 2021
- Annual Mt. Shadows Golf TournamentJan 22, 2021
- 2020 CREate 360 VirtualOct 21, 2020
- Regional NetworkingJun 24, 2020
- Industrial Networking Roundtables (June 2020)Jun 10, 2020
- TransACT 360 Virtual General SessionApr 30, 2020
- 2022 TransACT 360Apr 29, 2020
- GameFeb 27, 2020
- Mountain Shadows Golf TournamentJan 10, 2020
- Annual Holiday Party 12/05/2019Dec 5, 2019
- Annual Holiday Party 12/05/2019Dec 5, 2019
- Member & Sponsor LunchNov 6, 2019
- 2019 Fall World ConferenceOct 16, 2019
- Signature Speaker EventSep 24, 2019
- Members Only LunchSep 4, 2019
- Welcome to the Summer Happy HourJun 5, 2019
- Member/Sponsor Lunch 2019May 15, 2019
- Service Day 2019Apr 25, 2019
- 2019 Spring World ConferenceApr 10, 2019
- Annual Spring Training Game 2019Mar 1, 2019
- What's New in Tucson!Feb 21, 2019
- Winter Conference Ski OutingFeb 7, 2019
- Shotgun Golf TournamentJan 17, 2019
- Holiday Party 12/06/2018Dec 6, 2018
- Holiday Party 12/06/2018Dec 6, 2018
- SIOR Chapter Signature SpeakerOct 22, 2018
- Industrial Networking Forum 10/13/2018Oct 13, 2018
- 2018 Fall World ConferenceOct 11, 2018
- Top Golf 09/27/2018Sep 27, 2018
- Summer Happy HourJun 7, 2018
- Service Day 05/08/2018May 8, 2018
- Day at the Races 2018Apr 17, 2018
- 2018 Spring World ConferenceApr 11, 2018
- Spring Training Game 2018Mar 2, 2018
- Members- only LunchFeb 13, 2018
- Golf Tournament 01/18/2018Jan 18, 2018
- Holiday Party 12/07/2017Dec 7, 2017
- Holiday Party 12/07/2017Dec 7, 2017
- Annual Economic Forecast 2017Nov 8, 2017
- 2017 Fall World ConferenceOct 25, 2017
- A Day at the Races 08/04/2017Aug 4, 2017
- ""Here Comes Summer"" Happy Hour 2017Jun 14, 2017
- 2017 Leadership ConferenceJun 1, 2017
- Food & Classic Cocktail ExperienceMay 18, 2017
- 2017 Spring World ConferenceApr 26, 2017
- Spring Training Game 2017Mar 3, 2017
- Platinum Showcase 2017Jan 25, 2017
- Holiday Party 12/08/2016Dec 8, 2016
- Holiday Party 12/08/2016Dec 8, 2016
- 2016 Fall World ConferenceOct 20, 2016
- 2016 Leadership ConferenceJul 1, 2016
- ""Here Comes Summer"" Happy Hour 2016Jun 16, 2016
- 2016 Spring World ConferenceApr 13, 2016
- Holiday Party 12/03/2015Dec 3, 2015
- 2015 Fall World ConferenceOct 8, 2015
- 2015 Leadership ConferenceOct 7, 2015
- Annual Economic Forecast 2015Sep 17, 2015
- Happy Hour 06/18/2015Jun 18, 2015
- 2015 Spring World ConferenceApr 22, 2015
- 2014 Fall World ConferenceOct 22, 2014
- 2014 Spring World ConferenceApr 22, 2014
- 2013 Fall World ConferenceOct 24, 2013
- 2012 Fall World ConferenceOct 25, 2012
- 2011 Spring World ConferenceMay 5, 2011
- Leadership Conference 2009Oct 28, 2009
- 2009 Spring World ConferenceApr 24, 2009

