Donald Smith & Co. holds 8.1% of Allegiant Travel

Donald Smith & Co., Inc. filed as a significant shareholder of Allegiant Travel Co., reporting beneficial ownership of 1,493,503 shares of common stock, representing 8.10% of the class.

Rhea-AI Filing Summary

Donald Smith & Co., Inc. filed as a significant shareholder of Allegiant Travel Co., reporting beneficial ownership of 1,493,503 shares of common stock, representing 8.10% of the class. The filing is made on behalf of Donald Smith & Co., Inc. and DSCO Value Fund, L.P.

Donald Smith & Co., Inc. reports sole voting power over 1,427,066 shares and sole dispositive power over 1,478,326 shares, with DSCO Value Fund, L.P. holding sole voting and dispositive power over 15,177 shares. The advisory clients of Donald Smith & Co., Inc. retain the economic rights to dividends and sale proceeds, and no single client is stated to own more than five percent of Allegiant Travel’s common stock.

Key Figures

Beneficial ownership: 1,493,503 shares Percent of class: 8.10% Sole voting power (Donald Smith & Co., Inc.): 1,427,066 shares +3 more

6 metrics

Beneficial ownership 1,493,503 shares Common stock of Allegiant Travel Co. beneficially owned by the reporting group

Percent of class 8.10% Percentage of Allegiant Travel Co. common stock class represented by the reported holdings

Sole voting power (Donald Smith & Co., Inc.) 1,427,066 shares Shares over which Donald Smith & Co., Inc. has sole power to vote or direct the vote

Sole voting power (DSCO Value Fund, L.P.) 15,177 shares Shares over which DSCO Value Fund, L.P. has sole power to vote or direct the vote

Sole dispositive power (Donald Smith & Co., Inc.) 1,478,326 shares Shares over which Donald Smith & Co., Inc. has sole power to dispose or direct disposition

Sole dispositive power (DSCO Value Fund, L.P.) 15,177 shares Shares over which DSCO Value Fund, L.P. has sole power to dispose or direct disposition

Key Terms

beneficially owned, Sole Voting Power, Sole Dispositive Power, Ownership of more than 5 Percent, +2 more

6 terms

beneficially owned financial

"Item 4. | Ownership (a) | Amount beneficially owned: 1,493,503"

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.

Sole Voting Power financial

"5 | Sole Voting Power 1,427,066.00 6 | Shared Voting Power 0.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Sole Dispositive Power financial

"7 | Sole Dispositive Power 1,478,326.00 8 | Shared Dispositive Power 0.00"

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.

Ownership of more than 5 Percent regulatory

"Item 6. | Ownership of more than 5 Percent on Behalf of Another Person."

investment advisor financial

"institutional clients which Donald Smith & Co., Inc. serves as investment advisor."

An investment advisor is a person or firm that provides personalized guidance on buying, selling and managing investments and often oversees client portfolios for a fee. For investors this matters because the advisor shapes risk, costs and long-term returns, and is typically required by law to act in the client’s best interests — think of them as a financial coach or GPS that helps navigate choices and avoid costly detours.

Schedule 13G regulatory

"with respect to all securities reported in this schedule owned by advisory clients"

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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How much of Allegiant Travel Co. (ALGT) does Donald Smith & Co., Inc. beneficially own?

Donald Smith & Co., Inc. reports beneficial ownership of 1,493,503 shares of Allegiant Travel Co. common stock, representing 8.10% of the outstanding class. This reflects shares held for its advisory clients, over which it has voting and/or dispositive power.

What voting power does Donald Smith & Co., Inc. report over Allegiant Travel Co. (ALGT) shares?

Donald Smith & Co., Inc. reports sole voting power over 1,427,066 shares of Allegiant Travel Co. DSCO Value Fund, L.P. reports sole voting power over an additional 15,177 shares, contributing to the combined 8.10% beneficial ownership stake.

Who holds dispositive power over Allegiant Travel Co. (ALGT) shares in this Schedule 13G?

Donald Smith & Co., Inc. reports sole dispositive power over 1,478,326 shares of Allegiant Travel Co. DSCO Value Fund, L.P. reports sole dispositive power over 15,177 shares. No shared voting or shared dispositive power is reported for these holdings.

Do Donald Smith & Co., Inc.’s clients directly receive dividends from Allegiant Travel Co. (ALGT) shares?

Yes. The filing states that only the clients or their custodians or trustee banks have the right to receive dividends and sale proceeds. Donald Smith & Co., Inc. acts as investment advisor and does not serve as custodian of client assets.

Does any single client of Donald Smith & Co., Inc. own more than 5% of Allegiant Travel Co. (ALGT)?

According to the filing, no single client of Donald Smith & Co., Inc. is known to own more than 5% of Allegiant Travel Co.’s common stock. The 8.10% stake is spread across multiple institutional clients and related holders.

Which entities are included in the group reporting Allegiant Travel Co. (ALGT) ownership?

The group consists of Donald Smith & Co., Inc., classified as an investment advisor (IA), and DSCO Value Fund, L.P.. Together, they report beneficial ownership of 1,493,503 Allegiant Travel Co. common shares, or 8.10% of the class.

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

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Accepted by SEC EDGAR 08/11/2026 - 12:11 PM EDT Learn about SEC filing dates

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)

06/30/2026

(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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,427,066.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,478,326.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,493,503.00

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)

8.1 %

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 15,177.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 15,177.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,493,503.00

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)

8.1 %

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: 1,493,503
(b)	Percent of class: 8.10%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Donald Smith & Co., Inc. 1,427,066 DSCO Value Fund, L.P. 15,177
	(ii) Shared power to vote or to direct the vote: SEE ITEM 6
	(iii) Sole power to dispose or to direct the disposition of: Donald Smith & Co., Inc. 1,478,326 DSCO Value Fund, L.P. 15,177
	(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:	08/11/2026

DSCO Value Fund, L.P.

Signature:	Richard L. Greenberg
Name/Title:	CEO and Co-CIO
Date:	08/11/2026