Parabilis Medicines (PBLS) director files initial Form 3 ownership report

Rhea-AI Filing Summary

Parabilis Medicines, Inc. director Alan Sebulsky has filed a Form 3, which is the initial statement of beneficial ownership for insiders. The provided data shows no reported transactions, no common stock holdings, and no derivative securities positions for Sebulsky in this filing.

Key Terms

Form 3, reporting person, ten percent owner

3 terms

Form 3 regulatory

"director Alan Sebulsky has filed a Form 3, which is the initial statement of beneficial ownership"

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

"The reporting details indicate Alan Sebulsky is a director but not a ten percent owner"

ten percent owner financial

"The Form 3 flags him as a director and marks the ten percent owner field as not applicable"

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Available on EDGAR 06/12/2026 - 01:32 PM Accepted by SEC EDGAR 06/09/2026 - 09:20 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

SEBULSKY ALAN

(Last) (First) (Middle)

C/O PARABILIS MEDICINES, INC.

30 ACORN PARK DRIVE, 6TH FLOOR

(Street)

CAMBRIDGE MASSACHUSETTS 02140

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
06/09/2026

3. Issuer Name and Ticker or Trading Symbol
Parabilis Medicines, Inc. [ PBLS ]

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:

Remarks:

Exhibit 24 - Power of Attorney

No securities are beneficially owned.

	/s/ Teresa Jurgensen, Attorney-in-Fact	06/09/2026
	** 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 the Parabilis Medicines (PBLS) Form 3 filing report for Alan Sebulsky?

The Form 3 shows that director Alan Sebulsky has filed his initial insider ownership report for Parabilis Medicines. The data includes no reported transactions, share holdings, or derivative positions for him in this filing.

Did Parabilis Medicines director Alan Sebulsky buy or sell PBLS shares in this Form 3?

No transactions are reported for Alan Sebulsky in this Form 3. The transaction summary shows zero buys, zero sells, and no other insider trades, indicating this filing is purely an initial ownership statement without trading activity.

Are any derivative securities reported for Alan Sebulsky in the Parabilis PBLS Form 3?

No derivative securities are reported for Alan Sebulsky in this Form 3. The derivative summary is empty and the transaction summary shows zero derivative transactions, suggesting no options, warrants, or similar instruments are listed here.

Is Alan Sebulsky a 10% owner of Parabilis Medicines according to this Form 3?

The reporting details indicate Alan Sebulsky is a director but not a ten percent owner. The Form 3 flags him as a director and marks the ten percent owner field as not applicable in this filing’s data.

What is the significance of a Form 3 for Parabilis Medicines insiders like Alan Sebulsky?

Form 3 is the initial statement of beneficial ownership filed when someone becomes an insider, such as a director. For Parabilis Medicines, this filing records Sebulsky’s status and provides a baseline before any future Form 4 or Form 5 transactions.