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SCHEDULE 13D Filed 2026-07-09 Event 2026-03-19 SEC 0002141719-26-000003 →

Peak XV Partners Seed Investment Horizon Quantum Holdings Ltd. HQWWW

Stake: 20.30% Shares: 6,468,999 CUSIP: Y4000A102 Class: Class A Ordinary Shares, no par value

Item 4 — Purpose of Transaction

Peak Investments Seed purchased the aforementioned securities for investment purposes with the aim of increasing the value of its investments and the Issuer. Subject to applicable legal requirements, one or more of the Reporting Persons may purchase additional securities of the Issuer from time to time in open market or private transactions, depending on its evaluation of the Issuer's business, prospects and financial condition, the market for the Issuer's securities, other developments concerning the Issuer, the reaction of the Issuer to the Reporting Persons' ownership of the Issuer's securities, other opportunities available to the Reporting Persons, and general economic, money market and stock market conditions. In addition, depending upon the factors referred to above, the Reporting Persons may dispose of all or a portion of their securities of the Issuer at any time (including by means of programs adopted pursuant to Rule 10b5-1 under the Act). Each of the Reporting Persons reserves the right to increase or decrease its holdings on such terms and at such times as each may decide. Except as set forth in this Item 4 and Item 6 below, none of the Reporting Persons has a present plan or proposal that relates to or would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D of the Act. However, each of the Reporting Persons reserves the right to propose or participate in future transactions which may result in one or more of such actions, including but not limited to, an extraordinary corporate transaction, such as a merger, reorganization or liquidation, sale of a material amount of assets of the Issuer or its subsidiaries, or other transactions which might have the effect of causing the Class A Ordinary Shares to become eligible for termination of registration under Section 12(g) of the Act. The Reporting Persons also retain the right to change their investment intent at any time, to acquire additional shares of Class A Ordinary Shares or other securities of the Issuer from time to time, or to sell or otherwise dispose of all or part of the Class A Ordinary Shares beneficially owned by them (or any shares of Class A Ordinary Shares into which such securities are converted) in any manner permitted by law. The Reporting Persons may engage from time to time in ordinary course transactions with financial institutions with respect to the securities described herein.

Cross-References

Insider Activity (last 365d)
6 transactions
6 buys · 0 sales · 0 awards/exercises
Issuer Cluster
3 13D/G filings on this issuer
2 other filings besides this one
Filer Track Record
1 filings by this filer
0 other filings in the data moat
Short Interest · settle 2026-07-31
DTC 1.00
18,850 shares short · +43737.2% vs prior

Post-Filing Returns · since 2026-03-19 on HQWWW

+1 day
0.0%
+5 days
+14.2%
+30 days
+65.8%
+60 days
+16.4%
+90 days
+440.9%
+180 days

Anchor price 2.25 on closest trading day on/after 2026-03-19. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-03-19 Lambert Danielle director Buy 84,602 $11.82 $1000K
2026-03-19 Tan Si-Hui officer Award 500,000 $0.15 $75K
2026-03-19 Gould Greg officer Award 285,300 $5.13 $1.46M
2026-03-19 Fitzsimons Joseph Francis director, officer, 10%+ owner Award 19,744,585
2026-03-19 You Harry L. director, 10%+ owner Award 1,163,484
2026-03-19 You Harry L. director, 10%+ owner Award 2,884,660 $11.50 $33.17M

Other 13D/G Filings on Horizon Quantum Holdings Ltd.

FiledFormFilerStakeShares
2026-06-25 SCHEDULE 13G ICS OPPORTUNITIES, LTD. view →
2026-04-01 SCHEDULE 13D IonQ, Inc. 13.30% 4,230,118 view →

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