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SCHEDULE Filed 2025-10-10 Event 2025-10-09 SEC 0001193125-25-237180 →

Flawless Management Inc. → C3is Inc. CISS

Stake: 3.70% Shares: 100,577 CUSIP: Y18284169 Class: Common Stock, par value $0.01 per share
Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 7/100 · Filer 90d Win Rate: 0% · Hist. 90d Edge: -60.1%
  • Filer track record (4 filings): 0% 90d win rate, -60.1% 90d edge
  • Short interest building (+1401.1% vs prior settlement)

Item 4 — Purpose of Transaction

The Reporting Persons acquired the securities described in this Schedule 13D for investment purposes and intend to review their investment in the Issuer on a continuing basis. Any Reporting Person may from time to time acquire additional securities of the Issuer, or retain or sell all or a portion of the shares then held by the Reporting Persons, in the open market, block trades, underwritten public offerings or privately negotiated transactions. Any actions any Reporting Person might undertake with respect to its investment in the Issuer may be made at any time and from time to time and will be dependent upon such Reporting Person's review of numerous factors, including, but not limited to: ongoing evaluation of the Issuer's business, financial condition, operations, prospects and strategic alternatives; price levels of the Issuer's securities; general market, industry and economic conditions; the relative attractiveness of alternative business and investment opportunities; tax considerations; liquidity of the Issuer's securities; and other factors and future developments. Mr. Vafias serves as the Non-Executive Chairman of the Issuer and therefore regularly engages in discussions with management of the Issuer, the board of directors of the Issuer, other shareholders of the Issuer and other relevant parties, which discussions may include matters ranging from the operations and conduct of the Issuer's business to considering or exploring extraordinary corporate transactions including the events listed in Items 4(a) through 4(j) of Schedule 13D. In connection with these discussions, the Reporting Persons may, either directly or through one or more affiliates, determine to take any available course of action or to take no course of action and may at any time and from time to time take steps to further or implement such course of action, including any of the events listed in Items 4(a) through 4(j) of Schedule 13D. Any action or actions the Reporting Persons may undertake with respect to their investment in the Issuer or the operations and conduct of the Issuer's business will be dependent upon the Reporting Persons' review of numerous factors, including those listed above, and the Reporting Persons specifically reserve the right to change their intentions, or to formulate plans and proposals, with respect to any or all of the matters described in this paragraph, subject to applicable law and regulations.

Cross-References

Insider Activity (last 365d)
0 transactions
0 buys · 0 sales · 0 awards/exercises
Issuer Cluster
12 13D/G filings on this issuer
11 other filings besides this one
Filer Track Record
10 filings by this filer
9 other filings in the data moat
Short Interest · settle 2026-10-15
DTC 1.00
291,627 shares short · +1401.1% vs prior

Post-Filing Returns · since 2025-10-09 on CISS

+1 day
-9.0%
+5 days
-10.2%
+30 days
-20.4%
+60 days
-28.2%
+90 days
-90.3%
+180 days
-98.4%

Anchor price 343.00 on closest trading day on/after 2025-10-09. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on C3is Inc.

FiledFormFilerStakeShares
2026-10-02 SCHEDULE 13G/A TOWERVIEW LLC — — view →
2026-09-03 SCHEDULE 13G HORNE TIMOTHY P — — view →
2026-08-28 SCHEDULE 13D/A Imperial Petroleum Inc./Marshall Islands 80.50% 6,136,475 view →
2026-08-19 SCHEDULE 13G JANE STREET GROUP, LLC — — view →
2026-08-04 SCHEDULE 13G Ascent Partners Fund LLC — — view →
2026-07-30 SCHEDULE 13D/A Imperial Petroleum Inc./Marshall Islands 68.80% 28,846,153 view →
2026-06-24 SCHEDULE 13D/A Imperial Petroleum Inc./Marshall Islands 82.90% 7,171,543 view →
2026-05-18 SCHEDULE 13G TOWERVIEW LLC — — view →
2025-10-10 SCHEDULE Imperial Petroleum Inc./Marshall Islands 68.80% 6,000,000 view →
2025-10-01 SCHEDULE Flawless Management Inc. 6.30% 100,577 view →
2025-01-14 SCHEDULE Imperial Petroleum Inc./Marshall Islands 73.10% 11,532,251 view →

Other Filings by Flawless Management Inc.

FiledFormIssuerStakeShares
2026-06-24 SCHEDULE 13D/A Imperial Petroleum Inc. IMPPP — 6,991,255 view →
2025-12-03 SCHEDULE Imperial Petroleum Inc./Marshall Islands IMPPP 29.60% 13,205,673 view →
2025-10-01 SCHEDULE C3is Inc. CISS 6.30% 100,577 view →
2024-01-08 SC Imperial Petroleum Inc./Marshall Islands IMPPP — — view →
2023-12-11 SC Imperial Petroleum Inc./Marshall Islands IMPPP — — view →
2023-05-31 SC StealthGas Inc. GASS — — view →
2022-04-04 SC Imperial Petroleum Inc./Marshall Islands IMPPP — — view →
2021-06-01 SC StealthGas Inc. GASS — — view →
2020-03-27 SC StealthGas Inc. GASS — — view →

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