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Aperture AC (APURU) sponsor and CEO disclose 27.1% beneficial stake and lock-up terms

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D

Rhea-AI Filing Summary

Aperture Sponsor LLC and CEO Calvin Kung reported beneficial ownership of 3,995,603 ordinary shares of Aperture AC, representing 27.1% of the company’s outstanding shares as of May 22, 2026. The stake includes Class B founder shares that automatically convert into Class A shares at the time of the initial business combination and Class A shares from private placement units.

The Sponsor paid $25,000 for founder shares and $2,230,000 for 223,000 placement units funded from its working capital. Through a letter agreement, the Sponsor has waived redemption and liquidation rights on founder and placement shares and agreed to vote its holdings in favor of a business combination, with transfer restrictions applying until after the combination and specified trading or liquidity events.

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Insights

SPAC sponsor and CEO disclose a controlling-style 27.1% stake with lock-ups and pro-combination voting commitments.

Aperture Sponsor LLC and CEO Calvin Kung together hold 3,995,603 ordinary shares, or 27.1% of Aperture AC, based on 14,733,603 ordinary shares outstanding as of May 22, 2026. This includes 3,772,603 founder Class B shares convertible one-for-one into Class A and 223,000 Class A shares from placement units.

The Sponsor invested $25,000 in founder shares and $2,230,000 in 223,000 placement units. A letter agreement commits the Sponsor to waive redemption and certain liquidation rights, to support the business combination in shareholder votes, and to observe post-combination lock-ups and transfer restrictions.

These disclosures show the Sponsor and CEO as aligned long-term holders with significant influence over approval of the business combination. Subsequent company filings may detail the eventual business combination terms and how founder and placement securities convert when that transaction closes.

Beneficial ownership 3,995,603 shares Ordinary shares beneficially owned by each reporting person
Ownership percentage 27.1% Percent of class represented by 3,995,603 shares
Shares outstanding 14,733,603 shares Ordinary shares outstanding as of May 22, 2026
Founder shares acquired 3,828,082 shares Class B founder shares bought on September 30, 2025
Founder share cost $25,000 Aggregate purchase price for founder shares
Placement units purchased 223,000 units Placement units acquired on May 20, 2026
Placement units cost $2,230,000 Aggregate purchase price for 223,000 placement units
Class A shares from rights 55,750 shares Class A shares to be issued upon conversion of 223,000 rights
Founder Shares financial
"The aggregate purchase price for the Founder Shares (as defined below) was $25,000."
Founder shares are the ownership stakes given to the people who start a company, often with extra voting power or protections compared with ordinary shares. For investors, they matter because founders’ control and incentives influence decisions about strategy, hiring, and whether the company sells or stays independent — like a family that keeps majority voting rights in a household decision. High founder ownership can mean stable leadership but also a risk that outside shareholders have less influence.
Placement Units financial
"Sponsor purchased 223,000 placement units (the "Placement Units") from the Issuer for an aggregate purchase price of $2,230,000."
Letter Agreement financial
"Sponsor and the Issuer entered into a letter agreement (the "Letter Agreement") with other parties named thereunder on May 20, 2026,"
Registration Rights Agreement financial
"the Issuer entered into a registration rights agreement (the "Registration Rights Agreement") with Sponsor and other parties named thereunder"
A registration rights agreement is a contract that gives investors the option to have their ownership stakes officially registered with the government, making it easier to sell their shares later. This agreement matters because it provides investors with a clearer path to cash out their investments if they choose, offering more liquidity and confidence in their ability to sell their holdings when desired.
Business Combination financial
"The Founder Shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination (the "Business Combination")"
A business combination happens when two or more companies join together to operate as one, like two friends merging their teams into a single group. This is important because it can change how companies grow, compete, and make money, often making them bigger and more powerful in the market.
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G0474D101

(CUSIP Number)
Calvin Kung
835 Wilshire Blvd. 5th Floor,
Los Angeles, CA, 90017
(424) 253-0908

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
05/22/2026

(Date of Event Which Requires Filing of This Statement)


If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




schemaVersion:


SCHEDULE 13D




Comment for Type of Reporting Person:
Includes (i) 3,772,603 of the Issuer's (as defined below) Class B ordinary shares, $0.0001 par value, which are automatically convertible into the Issuer's Class A ordinary shares, $0.0001 par value, at the time of the Issuer's initial business combination or earlier at the option of the holder, on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, as more fully described under the heading "Description of Securities-- Founder Shares" in the Issuer's registration statement on Form S-1 (File No. 333- 291583) and (ii) 223,000 Class A ordinary shares underlying units (each unit consisting of one Class A ordinary share of the Issuer and one right to receive one-fourth (1/4) of a Class A ordinary share upon the consummation of the Issuer's initial business combination), acquired pursuant to a Unit Purchase Agreement (as defined below) by and between Aperture Sponsor LLC and the Issuer. Excludes 55,750 Class A ordinary shares which will be issued upon the conversion of 223,000 rights upon the consummation of the Issuer's initial business combination.


SCHEDULE 13D




Comment for Type of Reporting Person:
Includes (i) 3,772,603 of the Issuer's (as defined below) Class B ordinary shares, $0.0001 par value, which are automatically convertible into the Issuer's Class A ordinary shares, $0.0001 par value, at the time of the Issuer's initial business combination or earlier at the option of the holder, on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, as more fully described under the heading "Description of Securities-- Founder Shares" in the Issuer's registration statement on Form S-1 (File No. 333- 291583) and (ii) 223,000 Class A ordinary shares underlying units (each unit consisting of one Class A ordinary share of the Issuer and one right to receive one-fourth (1/4) of a Class A ordinary share upon the consummation of the Issuer's initial business combination), acquired pursuant to a Unit Purchase Agreement (as defined below) by and between Aperture Sponsor LLC and the Issuer. Excludes 55,750 Class A ordinary shares which will be issued upon the conversion of 223,000 rights upon the consummation of the Issuer's initial business combination.


SCHEDULE 13D


Aperture Sponsor LLC
Signature:/s/ Calvin Kung
Name/Title:Managing Member
Date:06/01/2026
Calvin Kung
Signature:/s/ Calvin Kung
Name/Title:Calvin Kung
Date:06/01/2026

FAQ

How many Aperture AC (APURU) shares do Aperture Sponsor LLC and Calvin Kung beneficially own?

Aperture Sponsor LLC and Calvin Kung beneficially own 3,995,603 ordinary shares of Aperture AC, equal to 27.1% of outstanding shares. This figure combines Class B founder shares convertible into Class A and Class A shares from private placement units, based on 14,733,603 shares outstanding.

What percentage of Aperture AC (APURU) does the sponsor’s 3,995,603-share stake represent?

The 3,995,603 ordinary shares reported by Aperture Sponsor LLC and Calvin Kung represent 27.1% of Aperture AC’s outstanding ordinary shares. This percentage is calculated using 14,733,603 ordinary shares outstanding as of May 22, 2026, including IPO, founder, private placement and representative shares.

What did Aperture Sponsor LLC pay for its founder shares and placement units in APURU?

Aperture Sponsor LLC paid $25,000 for founder shares and $2,230,000 for 223,000 placement units. The founder share price was approximately $0.007 per share, while placement units, each with one Class A share and a right, cost about $10 per unit, funded from sponsor working capital.

What are the key terms of the letter agreement affecting Aperture AC (APURU) sponsor shares?

Under the letter agreement, the sponsor waives redemption and certain liquidation rights on founder and placement shares and agrees to vote all such shares in favor of the business combination. It also accepts transfer restrictions, with lock-ups tied to post-combination holding periods and share-price or liquidity events.

How do Aperture AC (APURU) founder shares convert into Class A shares?

Aperture AC founder shares are Class B ordinary shares that automatically convert into Class A ordinary shares on a one-for-one basis at the time of the initial business combination. The conversion is subject to anti-dilution adjustments described under the founder shares section of the company’s Form S-1 registration.

How many shares of Aperture AC (APURU) were outstanding when the 27.1% stake was calculated?

The 27.1% ownership stake is based on 14,733,603 ordinary shares of Aperture AC outstanding as of May 22, 2026. This total includes IPO Class A shares, founder shares, Class A shares in private placement units, and 450,000 Class A representative shares issued to the underwriters.