Natalie Holles named LeonaBio (LONA) director in initial Form 3

Rhea-AI Filing Summary

LeonaBio, Inc. filed an initial Form 3 identifying Natalie C. Holles as a director and reporting person for the company’s securities. The filing does not report any transactions or holdings, serving mainly to establish her status under insider reporting rules.

Key Terms

Form 3, reporting person, director

3 terms

Form 3 regulatory

"filed an initial Form 3 identifying Natalie C. Holles as a director"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

reporting person regulatory

"identifying Natalie C. Holles as a director and reporting person"

director financial

"identifying Natalie C. Holles as a director and reporting person"

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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^*

Holles Natalie C.

(Last) (First) (Middle)

C/O LEONABIO, INC.

18706 NORTH CREEK PARKWAY, SUITE 104

(Street)

BOTHELL WASHINGTON 98011

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
05/05/2026

3. Issuer Name and Ticker or Trading Symbol
LeonaBio, Inc. [ LONA ]

3a. Foreign Trading Symbol

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

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)

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

Explanation of Responses:

No securities are beneficially owned.

	/s/ Mark Worthington, Attorney-in-Fact for Natalie C. Holles	05/07/2026
	** 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 does LeonaBio (LONA) disclose in Natalie Holles' Form 3?

LeonaBio, Inc. discloses that Natalie C. Holles is a director and reporting person for the company’s securities. The Form 3 is an initial beneficial ownership statement and does not show any share transactions or derivative positions for her.

Does Natalie Holles buy or sell LeonaBio (LONA) stock in this Form 3?

No, this Form 3 for Natalie C. Holles does not show any share purchases or sales. It only establishes her status as a director and reporting person, with no reported non-derivative or derivative transactions or holdings listed.

What is the purpose of Natalie Holles' Form 3 for LeonaBio (LONA)?

The Form 3 for Natalie C. Holles serves as an initial statement of beneficial ownership as she is a director of LeonaBio, Inc. It registers her as an insider subject to reporting rules but does not detail any current holdings or trades.

Are any derivative securities reported for Natalie Holles at LeonaBio (LONA)?

No derivative securities are reported for Natalie C. Holles. The derivative section is empty, and summary fields show zero derivative transactions or holdings, indicating no options, warrants, or similar instruments are listed in this initial filing.

What insider activity summary is provided for Natalie Holles at LeonaBio (LONA)?

The insider activity summary for Natalie C. Holles shows zero buy, sell, exercise, gift, tax withholding, or restructuring transactions, and no holding entries. It characterizes her net buy‑sell direction as neutral, consistent with a purely administrative initial filing.