Avalanche Treasury Corp (AVAT) CFO Sean Ostrower files initial Form 3

Rhea-AI Filing Summary

Avalanche Treasury Corp reported that Sean William Ostrower, its Chief Financial Officer, filed an initial Form 3 as an insider of the company. The filing lists his officer role but shows no reportable transactions or derivative positions at this time.

Key Terms

Form 3, Chief Financial Officer, insider

3 terms

Form 3 regulatory

"filed an initial Form 3 as an insider of the company"

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.

Chief Financial Officer financial

"Sean William Ostrower, its Chief Financial Officer, filed an initial Form 3"

A Chief Financial Officer (CFO) is the person in charge of a company's money and financial planning. They decide how to spend, save, and invest funds to help the company grow and stay stable. Their role is important because good financial decisions keep the company healthy and successful.

insider regulatory

"filed an initial Form 3 as an insider of the company"

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Available on EDGAR 06/23/2026 - 07:56 AM Accepted by SEC EDGAR 06/11/2026 - 01:52 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^*

Ostrower Sean William

(Last) (First) (Middle)

AVALANCHE TREASURY COMPANY, LLC.

11 W. 42ND STREET, 2ND FLOOR

(Street)

NEW YORK NEW YORK 10036

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
06/11/2026

3. Issuer Name and Ticker or Trading Symbol
Avalanche Treasury Corp [ AVAT ]

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)

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

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/ Laine Mihalchick Moljo, as Attorney-in-Fact	06/11/2026
	** 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 Avalanche Treasury Corp (AVAT) Form 3 filing show?

The Form 3 for Avalanche Treasury Corp lists Sean William Ostrower as Chief Financial Officer. It is an initial insider ownership report and, in this case, shows no reportable transactions or derivative positions for him at the time of filing.

Who is the insider named in Avalanche Treasury Corp (AVAT) Form 3?

The insider is Sean William Ostrower, identified as Chief Financial Officer of Avalanche Treasury Corp. The filing confirms his status as an officer and subject to insider reporting rules, but it does not list any share transactions or derivative holdings.

Does Avalanche Treasury Corp (AVAT) Form 3 report any insider share transactions?

No insider share transactions are reported in this Form 3. The transaction summary shows zero buys, zero sells, and no derivative exercises, meaning the filing only establishes Sean William Ostrower’s reporting status as Chief Financial Officer at Avalanche Treasury Corp.

Are there any derivative securities reported for AVAT CFO Sean William Ostrower?

No derivative securities are reported for Sean William Ostrower in this Form 3. The derivative summary is empty and the transaction summary lists zero derivative transactions or exercises, indicating no options, warrants, or similar instruments are disclosed here.

What is the purpose of the Avalanche Treasury Corp (AVAT) Form 3 for Sean William Ostrower?

The purpose is to provide an initial statement of beneficial ownership for Sean William Ostrower as Chief Financial Officer. It formally records his status as an insider of Avalanche Treasury Corp, even though no specific share or derivative holdings are detailed in this filing.