Evaxion (EVAX) director Roberto Prego discloses shares and long-dated warrants

Rhea-AI Filing Summary

Evaxion A/S director Roberto Prego has updated his Form 3/A to detail his equity interests. As of March 18, 2026, he holds 494,410 Ordinary Shares directly and 676,620 Ordinary Shares indirectly through Prego Fidaco Investment, an entity controlled by his father.

He also holds a range of warrants on Ordinary Shares with different exercise prices and long-dated expirations, including positions exercisable at 0.7400, 0.0590, and 0.1000 per share, among others. Some warrants stem from a private placement that closed on December 21, 2023 and a public offering that closed on January 31, 2025, with vesting described as 1/12 per month over 12 months from the initial exercise date.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Prego Roberto

(Last) (First) (Middle)

DR. NEERGAARDS VEJ 5F

(Street)

HORSHOLM DK-2970

(City) (State) (Zip)

DENMARK

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Evaxion A/S [ EVAX ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)
03/18/2026

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Ordinary Shares	494,410	D
Ordinary Shares	676,620	I	Prego Fidaco Investment(1)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrants(2)	12/21/2023	12/21/2026	Ordinary Shares	91,912	$0.74	D
Warrants(3)	01/31/2025	01/31/2030	Ordinary Shares	46,100	$0.059	D
Warrants	01/01/2016	12/31/2036	Ordinary Shares	100,260	$0.1	I	Prego Fidaco Investment(1)
Warrants	01/01/2017(4)	12/31/2036	Ordinary Shares	7,416	$0.1	D
Warrants	01/01/2017(4)	12/31/2036	Ordinary Shares	14,832	$0.1	I	Prego Fidaco Investment(1)
Warrants	01/01/2018(4)	12/31/2036	Ordinary Shares	12,384	$0.1	D
Warrants	01/01/2018(4)	12/31/2036	Ordinary Shares	4,356	$0.1	I	Prego Fidaco Investment(1)
Warrants	01/01/2019	12/31/2031	Ordinary Shares	7,128	$0.1	D
Warrants	01/01/2020	12/31/2031	Ordinary Shares	7,236	$0.1	D
Warrants	01/01/2021	12/31/2031	Ordinary Shares	4,583	$5.38	D
Warrants	01/01/2022(4)	12/31/2031	Ordinary Shares	5,000	$2.23	D
Warrants	01/01/2023(4)	12/31/2031	Ordinary Shares	5,000	$0.75	D
Warrants	01/01/2024(4)	12/31/2031	Ordinary Shares	20,000	$0.4	D
Warrants	01/01/2024(4)	12/31/2031	Ordinary Shares	25,000	$0.07	D

Explanation of Responses:

1. Mr. Prego's father is a control person of this entity.

2. Warrants pursuant to private placement that closed 12/21/2023.

3. Warrants pursuant to public offering that closed 1/31/2025.

4. Vesting is 1/12 per month over 12 months from the initial exercise date indicated.

Remarks:

Exhibit List - Exhibit 24.1 Power of Attorney. This Form 3/A amends the Form 3 filed on March 18, 2026, which reported Mr. Prego's initial holdings using the Issuer's CIK number as an interim measure, pending receipt of Mr. Prego's new filer CIK codes. This Form 3/A has been filed using Mr. Prego's CIK codes and reflects him as the Reporting Owner, with no alteration to his beneficial ownership.

	/s/ Michael Baird, Attorney-in-Fact	03/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What did Evaxion A/S (EVAX) director Roberto Prego report in this Form 3/A?

Roberto Prego reported his equity holdings in Evaxion A/S, including substantial Ordinary Share positions held both directly and through Prego Fidaco Investment, plus multiple warrant positions on Ordinary Shares with varying exercise prices and long-term expirations, clarifying his overall exposure to the company’s stock.

How many Evaxion (EVAX) Ordinary Shares does Roberto Prego hold directly and indirectly?

He holds 494,410 Ordinary Shares directly and 676,620 Ordinary Shares indirectly through Prego Fidaco Investment. This split shows a large portion of his economic interest is structured via a related entity, complementing a significant personal direct shareholding in Evaxion A/S.

What warrant positions on Evaxion (EVAX) shares does Roberto Prego disclose?

He discloses multiple warrant series on Ordinary Shares, with underlying share amounts such as 91,912, 46,100 and 100,260, and exercise prices including 0.7400, 0.0590 and 0.1000. These warrants expire between 2026 and 2036, indicating long-duration optional exposure to Evaxion stock.

Are any of Roberto Prego’s Evaxion (EVAX) holdings through related entities?

Yes. 676,620 Ordinary Shares and certain warrants are held indirectly through Prego Fidaco Investment. A footnote explains that Mr. Prego’s father is a control person of this entity, highlighting that part of the reported interest is held via a family-related investment vehicle.

What offerings are linked to Roberto Prego’s Evaxion (EVAX) warrants?

Some warrants are tied to a private placement that closed on December 21, 2023, and others to a public offering that closed on January 31, 2025. This connects portions of his derivative exposure directly to specific Evaxion capital-raising transactions over recent years.

How do Roberto Prego’s Evaxion (EVAX) warrants vest over time?

For certain warrant grants, vesting occurs at 1/12 per month over 12 months from the initial exercise date. This schedule gradually makes portions of the warrants exercisable, spreading potential share conversions over a one‑year period rather than all at once.