Donald Smith & Co. (ALGT) discloses 9.04% beneficial stake in Allegiant Travel

Rhea-AI Filing Summary

Donald Smith & Co., Inc. reports beneficial ownership of 1,668,046 shares of Allegiant Travel Co. Common Stock, representing 9.04% of the class as reported in a Schedule 13G. The filing states Donald Smith & Co. holds sole voting power for 1,598,806 shares and sole dispositive power for 1,652,666 shares. The schedule notes these securities are held in advisory accounts for institutional clients and that no single client owns more than 5% of the class. The filing is signed by Richard L. Greenberg, CEO and Co-CIO, dated 05/13/2026. The issuer CUSIP is 01748X102.

Key Figures

Beneficially owned: 1,668,046 shares Percent of class: 9.04% Sole voting power: 1,598,806 shares +4 more

7 metrics

Beneficially owned 1,668,046 shares Schedule 13G filing

Percent of class 9.04% Common stock ownership as reported

Sole voting power 1,598,806 shares Donald Smith & Co. sole power to vote

Sole dispositive power 1,652,666 shares Donald Smith & Co. sole power to dispose

DSCO Value Fund holdings 15,380 shares DSCO Value Fund, L.P. sole power counts

Filing signature date 05/13/2026 Schedule signed by Richard L. Greenberg

CUSIP 01748X102 Allegiant Travel Co. Common Stock

Key Terms

Schedule 13G, sole dispositive power, beneficially owned

3 terms

Schedule 13G regulatory

"reports beneficial ownership of 1,668,046 shares of Allegiant Travel Co. Common Stock"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

sole dispositive power regulatory

"SOLE POWER TO DISPOSE: Donald Smith & Co., Inc. 1,652,666"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

beneficially owned financial

"Amount beneficially owned: 1,668,046 (b) Percent of class: 9.04%"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/13/2026 - 03:16 PM Learn about SEC filing dates

FAQ

What stake does Donald Smith & Co. report in Allegiant Travel (ALGT)?

Donald Smith & Co. reports beneficial ownership of 1,668,046 shares, equal to 9.04% of Allegiant Travel Co. common stock. The filing lists voting and disposition powers and is dated 05/13/2026.

Does Donald Smith & Co. control voting or disposition of the ALGT shares?

The filing shows sole voting power for 1,598,806 shares and sole dispositive power for 1,652,666 shares. It also discloses 15,380 shares associated with DSCO Value Fund, L.P.

Are the Allegiant shares held for clients or the firm itself?

The Schedule 13G states the securities are held in advisory accounts for institutional clients; Donald Smith & Co. serves as investment advisor and does not act as custodian for client assets.

When was the ownership disclosed and which document was filed?

Ownership was disclosed in a Schedule 13G signed by Richard L. Greenberg, CEO and Co-CIO, with a signature date of 05/13/2026. The CUSIP reported is 01748X102.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Allegiant Travel CO

(Name of Issuer)

Common

(Title of Class of Securities)

01748X102

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 01748X102

1

Names of Reporting Persons

DONALD SMITH & CO., INC.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,598,806.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,652,666.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,668,046.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

9.0 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): 01748X102

1

Names of Reporting Persons

DSCO Value Fund, L.P.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 15,380.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 15,380.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,668,046.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

9.0 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Allegiant Travel CO
(b)	Address of issuer's principal executive offices: 1201 N. TOWN CENTER DRIVE, LAS VEGAS, NEVADA, 89144.
Item 2.
(a)	Name of person filing: Donald Smith & Co., Inc.
(b)	Address or principal business office or, if none, residence: 152 West 57th Street, 29th Floor New York, NY 10019
(c)	Citizenship: A Delaware Corporation
(d)	Title of class of securities: Common
(e)	CUSIP Number(s): 01748X102
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1,668,046
(b)	Percent of class: 9.04%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: SOLE POWER TO VOTE: Donald Smith & Co., Inc. 1,598,806 DSCO Value Fund, L.P. 15,380
	(ii) Shared power to vote or to direct the vote: SEE ITEM 6
	(iii) Sole power to dispose or to direct the disposition of: SOLE POWER TO DISPOSE: Donald Smith & Co., Inc. 1,652,666 DSCO Value Fund, L.P. 15,380
	(iv) Shared power to dispose or to direct the disposition of: SEE ITEM 6
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. 1. Donald Smith & Co., Inc. does not serve as custodian of the assets of any of its clients; accordingly, in each instance only the client or the client?s custodian or trustee bank has the right to receive dividends paid with respect to, and proceeds from the sale of, such securities. The ultimate power to direct the receipt of dividends paid with respect to, and the proceeds from the sale of, such securities, is vested in the institutional clients which Donald Smith & Co., Inc. serves as investment advisor. Any and all discretionary authority which has been delegated to Donald Smith & Co., Inc. may be revoked in whole or in part at any time. To the knowledge of Donald Smith & Co., Inc., with respect to all securities reported in this schedule owned by advisory clients of Donald Smith & Co., Inc., not more than 5% of the class of such securities is owned by any one client. 2. With respect to the remaining securities owned, various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Stock of Allegiant Travel Co. No one person?s interest in the Common Stock of Allegiant Travel Co. is more than five percent of the total outstanding Common Stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(K), so indicate under Item 3(k) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. Donald Smith & Co., Inc. IA DSCO Value Fund, L.P. PN
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

DONALD SMITH & CO., INC.

Signature:	Richard L. Greenberg
Name/Title:	CEO and Co-CIO
Date:	05/13/2026

DSCO Value Fund, L.P.

Signature:	Richard L. Greenberg
Name/Title:	CEO and Co-CIO
Date:	05/13/2026