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SCHEDULE Filed 2026-01-05 Event 2025-10-13 SEC 0001213900-26-000764 →

Cheng Jianguo Maase Inc. MAAS

Stake: 1.39% Shares: 4,444,445 CUSIP: G4453R115 Class: Class A Ordinary Share, par value $0.09 per share

Item 4 — Purpose of Transaction

Item 4 of this Schedule 13D is hereby amended and supplemented to add the following: Yinan Hu, through his wholly-owned subsidiary, disposed of his interest in Sea Synergy, and in turn, such number of Class A Ordinary Shares of the Issuer, for personal investment purposes. Jianguo Cheng and Wei Yang, through acquisition of interests in Sea Synergy, acquired beneficial ownership of the Class A Ordinary Shares as described in this Schedule 13D for investment purposes. Jianguo Cheng and Wei Yang intend to review their investment in the Issuer on a continuing basis. Each of Jianguo Cheng and Wei Yang may in the future take such actions with respect to its investment in the Issuer as he deems appropriate, including changing his current intentions, with respect to any or all matters required to be disclosed in this Schedule 13D, depending on various factors, including but not limited to the Issuer's business, prospects, financial position and strategic direction, conditions in the securities markets, and general economic and industry conditions. Consistent with investment purposes, Jianguo Cheng and Wei Yang may engage in communications with, without limitation, one or more shareholders of the Issuer, management of the Issuer or one or more members of the board of directors of the Issuer, and may make suggestions concerning the Issuer's operations, prospects, business and financial strategies, strategic direction and transactions, assets and liabilities, business and financing alternatives and such other matters as Jianguo Cheng and Wei Yang may deem relevant to their investment in the Class A Ordinary Shares. Jianguo Cheng and Wei Yang expect that they will, from time to time, review their investment position in the Issuer and may make additional purchases of Class A Ordinary Shares (or other securities convertible or exercisable into Class A Ordinary Shares) in the open market or in privately negotiated transactions, or hold or dispose of all or part of their investments in the Class A Ordinary Shares, depending upon the evaluation of the Issuer's business, prospects, financial condition and strategic direction, other opportunities available to Jianguo Cheng and Wei Yang, general economic conditions, stock market conditions and other factors. Except as set forth in this Item 4 or Item 6 below, Jianguo Cheng and Wei Yang have no present plans or proposals that relate to or that would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D of the Act.

Cross-References

Insider Activity (last 365d)
0 transactions
0 buys · 0 sales · 0 awards/exercises
Issuer Cluster
4 13D/G filings on this issuer
3 other filings besides this one
Filer Track Record
1 filings by this filer
0 other filings in the data moat
Short Interest · settle 2026-03-31
DTC 1.00
3,579 shares short · -18.3% vs prior

Post-Filing Returns · since 2025-10-13 on MAAS

+1 day
-6.2%
+5 days
+9.8%
+30 days
+21.8%
+60 days
+30.2%
+90 days
+73.8%
+180 days
+100.3%

Anchor price 3.05 on closest trading day on/after 2025-10-13. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

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