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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


FORM 11-K

ý    ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

    for the fiscal year ended December 31, 2020
Or
¨    TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    for the transition period from    to
Commission file number 0-6365


A.Full title of the plan and the address of the plan, if different from that of the issuer named below:

APOGEE ENTERPRISES, INC.
401(k) RETIREMENT PLAN

B.Name of issuer of the securities held pursuant to the plan and the address of its principal executive office:

APOGEE ENTERPRISES, INC.
4400 West 78th Street, Suite 520
Minneapolis, MN 55435




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Apogee Enterprises, Inc.
401(k) Retirement Plan

Employer ID No: 41-0919654
Plan Number: 005

Financial Statements as of and for the
Years Ended December 31, 2020 and 2019,
Supplemental Schedule as of December 31, 2020,
and Report of Independent Registered Public Accounting Firm


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APOGEE ENTERPRISES, INC. 401(k) RETIREMENT PLAN
TABLE OF CONTENTS    
                                                    
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1
FINANCIAL STATEMENTS:
2
3
4-8
SUPPLEMENTAL SCHEDULE FURNISHED PURSUANT TO THE REQUIREMENTS OF FORM 5500:
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NOTE: All other schedules required by Section 2520.103-10 of the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974 have been omitted because they are not applicable.

                    






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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Plan Participants and Plan Administrator of
Apogee Enterprises, Inc. 401(k) Retirement Plan
Minneapolis, MN

Opinion on the Financial Statements

We have audited the accompanying statements of net assets available for benefits of the Apogee Enterprises, Inc. 401(k) Retirement Plan (the "Plan") as of December 31, 2020 and 2019, the related statement of changes in net assets available for benefits for the years then ended, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2020 and 2019, and the changes in net assets available for benefits for the years then ended, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on the Plan's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Plan in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Report on Supplemental Schedule

The supplemental schedule of assets (held at end of year) as of December 31, 2020 has been subjected to audit procedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental schedule is the responsibility of the Plan’s management. Our audit procedures included determining whether the supplemental schedule reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental schedule. In forming our opinion on the supplemental schedule, we evaluated whether the supplemental schedule, including its form and content, are presented in compliance with the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, such schedule is fairly stated, in all material respects, in relation to the financial statements as a whole.

/s/ Deloitte & Touche LLP

Minneapolis, Minnesota
June 29, 2021
We have served as the auditor of the Plan since 2002.


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APOGEE ENTERPRISES, INC. 401(k) RETIREMENT PLAN
STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
AS OF DECEMBER 31, 2020 AND 2019
20202019
ASSETS:
Investments:
Participant-directed investments - at fair value$402,813,221 $375,989,133 
Fully benefit-responsive investment contracts - at contract value48,562,354 44,312,672 
Total investments451,375,575 420,301,805 
Receivables:
Notes receivable from participants14,583,377 14,829,603 
Employer contributions receivable— 98,480 
Total receivables14,583,377 14,928,083 
NET ASSETS AVAILABLE FOR BENEFITS$465,958,952 $435,229,888 
See notes to financial statements.

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APOGEE ENTERPRISES, INC. 401(k) RETIREMENT PLAN
STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
AS OF DECEMBER 31, 2020 AND 2019
20202019
ADDITIONS:
Contributions:
  Employee contributions$18,843,778 $19,685,889 
  Rollover contributions1,967,968 1,952,983 
  Employer contributions3,852,019 8,652,323 
Total contributions24,663,765 30,291,195 
Investment income:
  Net realized and unrealized appreciation of investments52,902,298 68,320,859 
  Interest and dividend income1,348,110 1,528,442 
Net investment income54,250,408 69,849,301 
  Interest income on notes receivable from participants833,107 793,980 
Total additions79,747,280 100,934,476 
DEDUCTIONS:
  Distributions to participants(48,266,213)(28,737,782)
  Administrative expenses(752,003)(834,157)
Total deductions(49,018,216)(29,571,939)
NET INCREASE IN NET ASSETS30,729,064 71,362,537 
NET ASSETS AVAILABLE FOR BENEFITS — At beginning of year435,229,888 363,867,351 
NET ASSETS AVAILABLE FOR BENEFITS — At end of year$465,958,952 $435,229,888 
See notes to financial statements.

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APOGEE ENTERPRISES, INC. 401(k) RETIREMENT PLAN
NOTES TO FINANCIAL STATEMENTS
AS OF AND FOR THE YEARS ENDED DECEMBER 31, 2020 AND 2019
1.Summary Description of the Plan
The following description of the Apogee Enterprises, Inc. 401(k) Retirement Plan (the “Plan”) is provided for general information purposes only. Participants should refer to the Plan document for more complete information.
General - The Plan is a defined contribution plan sponsored and administered by Apogee Enterprises, Inc. (the “Company”) for the benefit of all eligible employees. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended.
Plan Administrator, Trustee, and Record Keeper - The Company has appointed a committee consisting of certain officers and employees to be the Plan Administrator. The Principal Trust Company (the “Trustee”) holds the Plan’s investments in a trust, executes investment transactions, and collects and allocates the related investment income based on employee elections. The Principal Financial Group is the record keeper.
Eligibility - Under the terms of the Plan, a nonunion employee, or a union employee within a union agreement to participate, scheduled to work 1,000 hours in a 12-month period shall be eligible to participate in the Plan upon attaining age 18 and completing 30 days of qualified service.
Contributions - Participants may elect to have 1% to 60% of their compensation withheld and contributed to their basic account in the Plan, subject to the Internal Revenue Service (“IRS”) pretax contribution limits. Participants are automatically enrolled into the Plan at a deferral rate of 3% of their compensation. For those participants who were automatically enrolled in the Plan and had not modified their deferral rate, the Plan adds a 1% increase to their deferral as of January first each year, until a deferral rate of 10% is achieved. Participants can choose at any time to discontinue contributions. For the year ended December 31, 2019, the Company contributed for eligible nonunion and union participants an amount equal to 100% of the first 1% deferred, and 50% on the next 5% deferred. For the year ended December 31, 2020, the Company contributed for eligible nonunion and union participants an amount equal to 100% of the first 1% deferred, and 50% on the next 5% deferred for pay periods occurring before June 1, 2020. The Company suspended the matching contribution for pay dates on or after June 1, 2020 and ending on or before December 31, 2020. The Company reinstated the matching contribution for pay dates occurring on or after January 1, 2021.
Contributions made by participants who are members of the General Service Employees Union, Local No. 1 of the Service Employees International Union, AFL-CIO (the “Tru Vue Union”) are not matched by the Company. The Company contributes to Tru Vue Union participants an amount determined by the agreement between Tru Vue, Inc., a subsidiary of the Company, and the Tru Vue Union. The Company made a contribution in the amount of $21,822 and $34,386 for the plan years 2020 and 2019, respectively, for eligible members of the Tru Vue Union. The contribution made by the Company for eligible members of the Tru Vue Union is included within the employer contributions and employer contributions receivable in the statements of net assets available for benefits for the plan years 2020 and 2019, respectively.
While none have been made to date, the Company may also make additional discretionary profit-sharing contributions to all eligible participants. The Plan also allows participants to roll over lump-sum payments from other qualified plans. Effective January 1, 2020, the Company amended the Plan document to add an in-plan Roth conversion transfer feature.
Investments - Participants may make daily elections as to the investment of their pretax and Company contributions. Participants have the opportunity to direct all amounts allocated to their accounts and may choose to invest in a variety of mutual funds, common collective trust funds, pooled separate accounts and Company stock. These investment elections must be made in 1% increments with no more than 20% invested in the Company Stock Fund.
Vesting and Forfeitures - Participants’ pretax contributions are 100% vested at all times. Participants become 100% vested in their Company contributions after completing two years of qualified service with the Company or in the event of death, disability, or retirement, while in employment service. At December 31, 2020 and 2019, forfeited nonvested amounts were approximately $347,000 and $234,000, respectively, which are used to reduce the Company’s matching contribution subsequent to year-end. During the years ended December 31, 2020 and 2019, employer contributions were reduced by $211,000 and $175,000, respectively, from forfeited nonvested accounts plus earnings and uncashed account checks.
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Notes Receivable from Participants - The Plan allows participants employed by the Company to borrow up to 50% of the participant’s vested account balance, with a minimum of $500 and a maximum of $50,000, reduced by the highest outstanding loan balance in the previous 12-month period. A participant’s loan is financed proportionately from the account balances held in each investment. Loans can be repaid within five years, or, in the case of a home purchase, up to 15 years. The interest rate on the loans is 1% above the United States of America prime rate on the last business day of the calendar month preceding the calendar month in which the loan is granted. Loans are repaid through payroll deductions and are secured by the participant’s remaining account balance. If the participant terminates employment with the Company, either the outstanding loan balance must be repaid in a lump sum or distributions to the participant will be reduced accordingly.
Distributions - Upon death, disability, termination of employment, or retirement, participants may elect a lump-sum payment from the Plan. An annuity option may be available to certain participants.
A participant can elect to retain his or her account balance over $5,000 with the Plan until the later of separation of service or age 70½; however, a participant who is a 5% or more holder of Company stock may not defer his or her distribution beyond age 70½.
On December 20, 2019, Congress passed the Setting Every Community Up for Retirement Enhancement Act (the “SECURE Act”). The Company amended the Plan, effective January 1, 2020, to adopt and comply with the the SECURE Act provision raising the required age from 70½ to 72 for participants that had not attained age 70½ before January 1, 2020.
Employees may make withdrawals upon attainment of age 59½. Early withdrawal prior to age 59½ from employee basic contributions is permitted only if financial hardship is demonstrated and other financial resources are not available. Hardship withdrawals shall be made in compliance with safe harbor regulations established by the IRS.
Plan Termination - The Company contributes to the Plan as specified in the Plan documents. Although the Company has not expressed any intent to terminate the Plan, it may do so at any time, subject to such provisions set forth in ERISA. In the event that the Plan is terminated, all Company-contributed amounts would immediately become 100% vested.

2.Summary of Significant Accounting Policies
Basis of Accounting - The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”).
a.The Plan's investments are stated at fair value, except for fully benefit-responsive investment contracts, which are reported at contract value. Fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date; see Note 4 for additional discussion. Contract value is the amount Plan participants would receive if they were to initiate permitted transactions under the terms of the Plan.
b.Notes receivable from participants are measured at their unpaid principal balance plus any accrued but unpaid interest.
c.    Investment income is recorded on the accrual basis and dividend income on the ex-dividend date. Investment income includes recognition and allocation of interest income and realized and unrealized gains and losses. Purchases and sales of securities are recorded on trade-date basis. Net appreciation (depreciation) includes the plan's gains and losses on investments bought and sold, as well as held, during the year.
d.    Deposits, withdrawals, and transfers by the Plan are made at fair value when the transactions occur, except for the Stable Value Fund as described in Note 5.
Use of Estimates - The preparation of financial statements in conformity with GAAP requires the Plan Administrator to make estimates and assumptions that affect the reported amounts of net assets available for benefits and changes therein. Actual results could differ from those estimates.
Risks and Uncertainties - The Plan’s various investment securities are exposed to various risks, such as interest rate risk, credit risk, and overall market volatility. Due to the level of risk and uncertainty, it is reasonably possible that changes in the values of the investments will occur in the near term, and such changes could materially affect participants’ account balances, and the amounts reported in the financial statements.
In March 2020, the World Health Organization declared a novel strain of coronavirus, COVID-19, a global pandemic. This contagious disease outbreak, has dramatically impacted the global health and economic environment, including millions of confirmed cases, business slowdowns and shutdowns, government challenges and market volatility. While the efforts to
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mitigate the impacts of the pandemic have evolved positively, the extent to which COVID-19 will continue to impact the Company and the Plan's net assets available for benefits will depend in part on the effectiveness of ongoing public health initiatives, which have been buoyed by vaccine production and distribution.
Administrative Expenses - All administrative expenses related to trustee and recordkeeping services were paid by the Plan.
Payments of Benefits - Benefit payments to participants are recorded upon distribution. For the years ended December 31, 2020 and December 31, 2019, respectively, amounts allocated to accounts of persons who have elected to withdraw from the Plan, but have not been paid, were $0.
Administrative Changes due to CARES Act - On March 27, 2020, Congress passed the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”). The Company adopted and implemented the provisions of the CARES Act that were in effect from the date of passing until December 31, 2020. As a result, participants that certified they experienced certain adverse financial consequences from the COVID-19 pandemic or the participant, their spouse, or dependent have been diagnosed with COVID-19 or SARS-CoV-2 were able to:
Withdraw, penalty free, up to $100,000 of vested account balances.
Defer current active loan payments for the 2020 plan year.
Take new loans up to $100,000 of vested account balances through September 22, 2020.
Suspend 2020 required minimum distributions (“RMD”) altogether or for RMD distributions made prior to the enactment of the CARES Act, roll them over to another eligible retirement plan within the prescribed timeframe according to IRS notice 2020-23.

Subsequent Events - There have been no subsequent events which required recognition in the financial statements through the date of this filing.
3.Federal Tax Status

The Company received the last favorable determination letter from the Internal Revenue Service dated February 10, 2016, stating that the Plan and related trust were designed in accordance with applicable sections of the Internal Revenue Code, and the Plan and related trust continue to be tax-exempt. Therefore, no provision for income taxes has been included in the Plan’s financial statements.
The Plan Administrator determined no uncertain tax positions have been taken as of December 31, 2020 and 2019. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits in progress and the Plan is no longer subject to income tax examinations for years prior to 2017.
4.Fair Value Measurements
Financial assets and liabilities are classified in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement: Level 1 (unadjusted quoted prices in active markets for identical assets or liabilities); Level 2 (observable market inputs, other than quoted prices included in Level 1); and Level 3 (unobservable inputs that cannot be corroborated by observable market data). The Plan does not have any Level 3 assets or liabilities.

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Financial assets measured at fair value on a recurring basis as of December 31, 2020 and December 31, 2019 were as follows:
Quoted Prices in Active Markets (Level 1)
December 31, 2020
   Mutual funds$88,868,435 
   Apogee Enterprises, Inc. common stock12,261,500 
Self-directed brokerage account3,303,831 
Total104,433,766 
Investments measured at net asset value (NAV):
Common collective trust funds282,859,849 
Pooled separate accounts - index funds15,519,606 
Total investments$402,813,221 
December 31, 2019
   Mutual funds$77,089,921 
   Apogee Enterprises, Inc. common stock12,869,951 
Self-directed brokerage account204,706 
Total90,164,578 
Investments measured at net asset value (NAV):
Common collective trust funds267,307,133 
Pooled separate accounts - index funds18,517,422 
Total investments$375,989,133 
The following is a description of the valuation methodologies used for assets measured at fair value.
Mutual funds and self-directed brokerage account investments were valued at quoted market prices.
Apogee Common Stock was valued at the closing price reported on the NASDAQ Global Select Market on the last business day of the Plan year.
Common Collective Trust Funds are valued at the NAV of units of a bank collective trust. The NAV as provided by the trustee is used as a practical expedient to estimate fair value. The NAV is based on the fair value of the underlying investments held by the fund (a diversified portfolio of U.S. and international stocks, inflation-hedging securities, U.S. bonds and cash reserves) less its liabilities. This practical expedient is not used when it is determined to be probable that the fund will sell the investment for an amount different than the reported net asset value. Participant transactions (purchased and sales) may occur daily. Were the Plan to initiate a full redemption of the collective trust, the investment advisor reserves the right to temporarily delay withdrawal from the trust in order to ensure that securities liquidations will be carried out in an orderly business manner. These investments are available to redeem immediately, and there are no redemption restrictions or notice periods required. There were no unfunded commitments as of December 31, 2020, and December 31, 2019.
Pooled Separate Accounts are investments represented by a unit of account whose per unit value is the result of the accumulated values of the underlying investments. The underlying investments are public investment vehicles valued using NAV per share. The NAV is based upon the value of the underlying assets owned by the fund, minus its liabilities, and then divided by the number of shares outstanding. The NAVs of the underlying investments are quoted in an active market. The Plan has no unfunded commitments related to the pooled separate accounts and redemptions and subscriptions are permitted daily.

5.Stable Value Fund

The Plan provides participants a self-managed stable value investment option (the Prudential Stable Value Fund or “the Fund”) that simulates the performance of a guaranteed investment contract, whereby participants execute Plan transactions at contract value. Contract value represents contributions made to the fund, plus earnings, less participant withdrawals. The self-managed stable value fund is composed of a bond fund (the Prudential Core Intermediate Bond Fund) owned by the Plan and an investment contract issued by an insurance company designed to provide a contract value “wrapper” around the bond fund to
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guarantee a specific interest rate which is reset quarterly and that cannot be less than zero. The wrapper contract provides that realized and unrealized gains and losses on the underlying bond fund are not reflected immediately in the net assets of the fund, but rather are amortized over the duration of the underlying assets through adjustments to the future interest crediting rate. Primary variables impacting future crediting rates of the Fund include the current yield, duration, and existing difference between market and contract value of the underlying assets within the wrap contract.
Limitations on the Ability of the Fund to Transact at Contract Value
Certain events may limit the ability of the Plan to transact at contract value or may allow for the termination of the wrapper contract at less than contract value. These events may differ under each contract. Examples of such invents include the following:
1.The Plan’s failure to qualify under Section 401(a) of the Internal Revenue Code or the failure of the trust to be tax-exempt under Section 501(a) of the Internal Revenue Code
2.Premature termination of the contracts
3.Plan termination or merger initiated by the Plan Sponsor
4.Changes to the Plan’s prohibition on competing investment options
5.Bankruptcy of the Plan Sponsor or other Plan Sponsor events (for example, divestitures or spinoffs of a subsidiary) that significantly affect the Plan’s normal operations.
No events are probable of occurring that might limit the ability of the Plan to transact at contract value with the contract issuers and that also would limit the ability of the Plan to transact at contract value with the participants.
In addition, certain events allow the issuer to terminate the contracts with the Plan and settle at an amount different from contract value. Those events may be different under each contract. Examples of such events include the following:
1.An uncured violation of the Plan’s investment guidelines
2.A breach of material obligation under the contract
3.A material misrepresentation
4.A material amendment to the agreements without the consent of the issuer

6.Party-in-Interest Transactions
The Plan paid $30,021 to State Street Bank and Trust Company, $176,381 to Prudential Insurance Co., and $575,457 to Principal for investment management services for the year ended December 31, 2020. At December 31, 2020 and 2019, the Plan held 387,042 and 395,998 shares, respectively, of Company stock, with a cost basis of $10,766,388 and $11,535,643, respectively. During the years ended December 31, 2020 and 2019, the Plan recorded dividend income from the Company's common stock of $300,665 and $276,154, respectively. The Plan also holds shares in the Principal Midcap S&P 400 Index Fund, the Principal Smallcap S&P 600 Index Fund, and the Principal Self-Directed Brokerage Account, which are all managed by the Trustee. These transactions qualify as exempt party-in-interest transactions.





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APOGEE ENTERPRISES, INC. 401(k) RETIREMENT PLAN
EIN: 41-0919654, PLAN NUMBER: 005
SCHEDULE H, PART IV, LINE 4i — SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2020
Description ofCurrent
DescriptionCostInvestmentValue
Prudential Stable Value Fund:
Prudential Core Intermediate Bond Fund**Common/collective trust$51,211,839 
Prudential Stable Value Fund Wrapper**Wrapper/other(2,649,485)
BlackRock LifePath Index 2025 Fund**Common/collective trust39,555,455 
BlackRock LifePath Index 2030 Fund**Common/collective trust36,041,570 
Northern Trust S&P 500 Index Fund**Common/collective trust34,676,184 
BlackRock LifePath Index 2035 Fund**Common/collective trust28,517,739 
Northern Trust Russell 1000 Growth Index Fund**Common/collective trust27,891,495 
BlackRock LifePath Index 2040 Fund**Common/collective trust27,811,424 
BlackRock LifePath Index Retirement Fund**Common/collective trust22,729,240 
Northern Trust Russell 1000 Value Index Fund**Common/collective trust20,889,282 
BlackRock LifePath Index 2045 Fund**Common/collective trust19,980,748 
BlackRock LifePath Index 2050 Fund**Common/collective trust18,654,743 
BlackRock LifePath Index 2055 Fund**Common/collective trust2,917,020 
BlackRock LifePath Index 2060 Fund**Common/collective trust2,426,144 
BlackRock LifePath Index 2065 Fund**Common/collective trust475,722 
BlackRock Strategic Completion Fund**Common/collective trust293,083 
Vanguard TTL Bond Market Index**Mutual fund21,515,116 
Vanguard Smallcap Growth Index**Mutual fund19,432,077 
Vanguard International Growth Fund**Mutual fund18,022,667 
Vanguard Midcap Growth Index**Mutual fund8,658,573 
Vanguard Developed Markets Index**Mutual fund6,242,691 
Vanguard Midcap Value Index**Mutual fund5,379,027 
Vanguard Treasury Money Market Fund**Mutual fund3,885,631 
Vanguard Smallcap Value Index**Mutual fund3,529,005 
Vanguard International Value Fund**Mutual fund2,203,648 
Principal Midcap S&P 400 Index***Pooled separate account11,481,274 
Principal Smallcap S&P 600 Index***Pooled separate account4,038,332 
Principal Self-Directed Brokerage Account***Self-directed brokerage3,303,831 
Apogee Enterprises, Inc. Common Stock***Employer securities12,261,500 
Loans to participants*, maturing through February 2, 2036 with
  interest rates of 3.25% to 9.25%Participant loans14,583,377 
TOTAL$465,958,952 
* Denotes party-in-interest
** Historical cost has been omitted for participant-directed investments
See accompanying Report of Independent Registered Public Accounting Firm.

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EXHIBIT INDEX


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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

APOGEE ENTERPRISES, INC.
401(k) RETIREMENT PLAN


By:    APOGEE ENTERPRISES, INC.
    
    Plan Administrator

By:    /s/ Nisheet Gupta
    ______________________________________________
    Nisheet Gupta
    Executive Vice President and Chief Financial Officer

Date:    June 29, 2021



Document
Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-207369 on Form S-8 of our report dated June 29, 2021, relating to the financial statements and supplemental schedule of Apogee Enterprises, Inc. 401(k) Retirement Plan appearing in this Annual Report on Form 11-K of Apogee Enterprises, Inc. 401(k) Retirement Plan for the year ended December 31, 2020.

/s/ Deloitte & Touche LLP

Minneapolis, Minnesota

June 29, 2021