MAA SCHEDULE 13G: SEC filing

Viking Global Investors LP and affiliated entities

Filed with the SEC on · accession 0000905148-26-004368

MAA filed a SCHEDULE 13G (schedule 13g) with the SEC on Oct 5, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +1.0% by the first close after the filing.

Summary of the filing

Viking Global Investors LP and affiliated entities filed a joint filing agreement as an exhibit to a Schedule 13G regarding their position in Mid-America Apartment Communities Inc. The agreement allows the parties to jointly file required SEC ownership reports.

Key details

FilerViking Global Investors LP
Filer affiliateViking Global Performance LLC
Filer affiliateViking Global Equities II LP
Filer affiliateViking Global Equities Master Ltd.
Filer affiliateViking Long Fund GP LLC
Filer affiliateViking Long Fund Master Ltd.
Filer affiliateViking Global Opportunities Parent GP LLC
Filer affiliateViking Global Opportunities GP LLC
Filer affiliateViking Global Opportunities Portfolio GP LLC
Filer affiliateViking Global Opportunities Liquid Portfolio Sub-Master LP
Subject companyMid America Apartment Communities Inc.
Executive committee member, viking global partners llcO. Andreas Halvorsen
Executive committee member, viking global partners llcRose S. Shabet
Authorized signatoryScott M. Hendler

How MAA stock reacted

Close before

$115.27

Oct 2, 2026

First close after

+1.04%

$116.47

5 trading days

+1.38%

$116.86

Since filing

+5.57%

$121.69

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Frequently asked questions

What did MAA file with the SEC on Oct 5, 2026?

MAA filed a SCHEDULE 13G (SEC filing). Viking Global Investors LP and affiliated entities filed a joint filing agreement as an exhibit to a Schedule 13G regarding their position in Mid-America Apartment Communities Inc. The agreement allows the parties to jointly file required SEC ownership reports.

How do I read a SCHEDULE 13G?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G (schedule 13g): A report the company filed with the SEC (the US market regulator).

How did MAA stock react to this filing?

MAA closed at $115.27 before the filing and $116.47 on Oct 5, 2026 (+1.04%). Five trading days later: $116.86 (+1.38%).

Other MAA SEC filings

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