Robert W. Mairs

Robert W. Mairs

MAIRS & POWER INC

CIK: 0001070134

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Last Update On: Nov 01, 2025

Robert W. Mairs is the Chief Executive Officer and President of Mairs & Power, Inc., an independent, employee-owned investment advisory firm. He joined the firm in 2015 as general counsel and has since held various leadership roles, including chief compliance officer and president. In October 2024, he was named CEO, succeeding Mark L. Henneman.

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Ownership

Trade Activity

# Ticker Activity Shares Shares Value Shares Owned Quarter Filing Date Report Date
01
MSFT

Microsoft Corpor...

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Q2 2025 08/14/2025 06/30/2025
02
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Microsoft Corpor...

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Q1 2025 05/15/2025 03/31/2025
03
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Microsoft Corpor...

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Q4 2024 02/14/2025 12/31/2024
04
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Microsoft Corpor...

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Q3 2024 11/14/2024 09/30/2024
05
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Microsoft Corpor...

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Q2 2024 08/14/2024 06/30/2024
06
MSFT

Microsoft Corpor...

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Q1 2024 05/15/2024 03/31/2024
07
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Microsoft Corpor...

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Q4 2023 02/14/2024 12/31/2023
08
MSFT

Microsoft Corpor...

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Q3 2023 11/14/2023 09/30/2023
09
MSFT

Microsoft Corpor...

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Q2 2023 08/14/2023 06/30/2023
10
MSFT

Microsoft Corpor...

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Q1 2023 05/15/2023 03/31/2023
11
MSFT

Microsoft Corpor...

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Q4 2022 02/14/2023 12/31/2022
12
MSFT

Microsoft Corpor...

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Q3 2022 11/14/2022 09/30/2022
13
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Microsoft Corpor...

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Q2 2022 08/15/2022 06/30/2022
14
MSFT

Microsoft Corpor...

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Q1 2022 05/16/2022 03/31/2022
15
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Microsoft Corpor...

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Q4 2021 02/14/2022 12/31/2021
16
MSFT

Microsoft Corpor...

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Q3 2021 11/15/2021 09/30/2021
17
MSFT

Microsoft Corpor...

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Q2 2021 08/16/2021 06/30/2021
18
MSFT

Microsoft Corpor...

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Q1 2021 05/14/2021 03/31/2021
19
MSFT

Microsoft Corpor...

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Q4 2020 02/16/2021 12/31/2020
20
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Microsoft Corpor...

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Q3 2020 11/16/2020 09/30/2020
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Frequently Asked Questions

02

Robert W. Mairs is the Chief Executive Officer and President of Mairs & Power, Inc., an independent, employee-owned investment advisory firm. He joined the firm in 2015 as general counsel and has since held various leadership roles, including chief compliance officer and president. In October 2024, he was named CEO, succeeding Mark L. Henneman.

02

Explore Robert W. Mairs largest investments on Stocks.News, including companies like Microsoft Corporation , NVIDIA Corporation , Alphabet Inc. , and their significance in his portfolio.

02

Robert W. Mairs portfolio updates are typically published quarterly through SEC 13F filings, which provide detailed information about their holdings, including recent buys and sells.

02

Robert W. Mairs currently invests in companies such as Autodesk, Inc.

02

The largest holding in Robert W. Mairs portfolio is Microsoft Corporation.

02

As of Jun 30, 2025, Robert W. Mairs portfolio is valued at approximately $10.13 B, based on the latest filings available on Stocks.News.