FORM10-Q QUARTERLY REPORT PURSUANT TO SECTION13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the quarterly period ended June30, 2026 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ______ to ______ Commission File Number: 1-12672 AVALONBAY COMMUNITIES,INC.(Exact name of registrant as specified in its charter) Maryland77-0404318(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.) 4040 Wilson Blvd., Suite 1000Arlington, Virginia22203(Address of principal executive offices) (Zip Code)(703) 329-6300(Registrant's telephone number, including area code)(Former name, former address and former fiscal year, if changed since last report) Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registeredCommon Stock, par value $0.01 per shareAVBNew York Stock Exchange Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d)of the Securities Exchange Act of1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to suchfiling requirements for the past 90 days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submitsuch files).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, oran emerging growth company.See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growthcompany" in Rule12b-2 of the Exchange Act. Large accelerated filer☒Accelerated filer☐Non-accelerated filer☐Smaller reporting company☐Emerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with anynew or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act).Yes☐No☒ Indicate the number of shares outstanding of each of the issuer's classes of common stock as of the latest practicable date: 142,797,963 shares of common stock, par value $0.01 per share, were outstanding as of July24, 2026. AVALONBAY COMMUNITIES,INC.FORM10-QINDEX PARTI - FINANCIAL INFORMATION ITEM 1.CONDENSED CONSOLIDATED FINANCIAL STATEMENTS CONDENSED CONSOLIDATED BALANCE SHEETS AS OF JUNE 30, 2026 (UNAUDITED) ANDDECEMBER 31, 20251CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) FOR THE THREEAND SIX MONTHS ENDED JUNE 30, 2026 AND 20252CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2026 AND 20253CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) FOR THE SIX MONTHSENDED JUNE 30, 2026 AND 20254CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) FOR THE SIXMONTHS ENDED JUNE 30, 2026 AND 20255NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)7ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OFOPERATIONS27ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK48ITEM 4. CONTROLS AND PROCEDURES48PARTII - OTHER INFORMATIONITEM 1. LEGAL PROCEEDINGS48ITEM 1A. RISK FACTORS48ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS55ITEM 3. DEFAULTS UPON SENIOR SECURITIES55ITEM 4. MINE SAFETY DISCLOSURES55ITEM 5. OTHER INFORMATION55ITEM 6. EXHIBITS57SIGNATURES58 AVALONBAY COMMUNITIES,INC.CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS(unaudited)(Dollars in thousands, except per share data) AVALONBAY COMMUNITIES,INC.CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(unaudited)(Dollars in thousands) CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (continued) The following table provides a reconciliation of cash, cash equivalents and restricted cash reported with the Condensed ConsolidatedStatements of Cash Flows (dollars in thousands): Supplemental disclosures of non-cash investing and financing activities: During the six months ended June 30, 2026: •As described in Note 4, "Equity," the Company issued 234,445 shares of common stock as part of the Company's stock-basedcompensation plans, of which 123,221 shares related to the conversion of performance awards to shares of common stock,and the remaining 111,224 shares valued at $19,990,000 were issued in connection with new stock grants; 2,987 sharesvalued at $529,000 were issued through the Company's dividend reinvestment plan; 83,467 shares valued at $14,792,000were withheld to satisfy