0002090787 1 2026-03-19 2026-03-19 0002090787 2 2026-03-19 2026-03-19 0002090787 3 2026-03-19 2026-03-19 0002090787 4 2026-03-19 2026-03-19 0002090787 5 2026-03-19 2026-03-19 0002090787 6 2026-03-19 2026-03-19 0002090787 1 2026-03-19 2026-03-19 0002090787 2 2026-03-19 2026-03-19 0002090787 2026-03-19 2026-03-19 iso4217:USD pure shares S-1/A EX-FILING FEES 0002090787 333-294512 true false N/A S-1 Oceanhawk Acquisition Corp. false Equity Rights included as part of the unit true 13964285 0.00 0.00 0.0001381 0.00 false Equity Class A ordinary shares underlying the rights included as part of the units true 1026785 10.00 10267850.00 0.0001381 1418.00 true Equity Units, each consisting of one Class A ordinary share, $0.0001 par value, and one right true 23000000 10.00 230000000.00 31763.00 true Equity Class A ordinary shares included as part of the units true 23000000 0.00 0.00 0.00 true Equity Rights included as part of the unit true 3285715 0.00 0.00 0.00 true Equity Class A ordinary shares underlying the rights included as part of the units true 3285715 10.00 32857143.00 4537.57 273124993.00 37718.57 36300.57 1418.00 0.00 Estimated solely for the purpose of calculating the registration fee.<br/><br/>Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the “Securities Act”), there are also being registered an indeterminable number of additional securities as may be offered or issued to prevent dilution resulting from share subdivisions, stock dividends, or similar transactions.<br/><br/>No fee pursuant to Rule 457(g) under the Securities Act.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Price is $215,624,993.00.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Fee is $29,777.81. Estimated solely for the purpose of calculating the registration fee.<br/><br/>Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the “Securities Act”), there are also being registered an indeterminable number of additional securities as may be offered or issued to prevent dilution resulting from share subdivisions, stock dividends, or similar transactions.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Price is $215,624,993.00.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Fee is $29,777.81. Estimated solely for the purpose of calculating the registration fee.<br/><br/>Includes 3,000,000 units, consisting of 3,000,000 Class A ordinary shares and 428,572 rights, which may be issued upon exercise of a 45-day option granted to the underwriters to cover over-allotments, if any.<br/><br/>Units being registered has been reduced from 23,000,000 to 17,250,000.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000, the price is reduced from $230,000,000 to $172,500,000.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000, the fee due is reduced from $31,763 to $23,822.25.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Price is $215,624,993.00.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Fee is $29,777.81. Estimated solely for the purpose of calculating the registration fee.<br/><br/>Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the “Securities Act”), there are also being registered an indeterminable number of additional securities as may be offered or issued to prevent dilution resulting from share subdivisions, stock dividends, or similar transactions.<br/><br/>No fee pursuant to Rule 457(g) under the Securities Act.<br/><br/>Class A ordinary shares included as part of the units being registered has been reduced from 23,000,000 to 17,250,000.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Price is $215,624,993.00.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Fee is $29,777.81. Estimated solely for the purpose of calculating the registration fee.<br/><br/>Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the “Securities Act”), there are also being registered an indeterminable number of additional securities as may be offered or issued to prevent dilution resulting from share subdivisions, stock dividends, or similar transactions.<br/><br/>No fee pursuant to Rule 457(g) under the Securities Act.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Price is $215,624,993.00.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Fee is $29,777.81. Estimated solely for the purpose of calculating the registration fee.<br/><br/>Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the “Securities Act”), there are also being registered an indeterminable number of additional securities as may be offered or issued to prevent dilution resulting from share subdivisions, stock dividends, or similar transactions.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Price is $215,624,993.00.<br/><br/>With the reduction in the Units being registered from 23,000,000 to 17,250,000 and the increase in the Class A ordinary shares underlying the rights included as part of the units, the Total Offering Amounts Fee is $29,777.81. true S-1 333-294512 2026-03-23 1418.00 Equity Units, each consisting of one Class A ordinary share, $0.0001 par value, and one right true Oceanhawk Acquisition Corp. S-1 333-294512 2026-03-23 36300.57 A fee of $36,300.57 was previously paid in connection with the filing of Oceanhawk Acquisition Corp. Registration Statement on Form S-1 (No. 333-294512) on March 23, 2026 (the “Initial Registration Statement”), of which $36,300.57 remains unused. A portion of this is used to offset (a) the $23,822.25 of fees due for the registration of 17,250,000 Units, consisting of one Class A ordinary share, $0.0001 par value, and one right and (b) the $4,537.57 of fees dues for the registration of the Class A ordinary shares underlying the rights included as part of the units. $1,418.00 of the remaining $7,940.75 from the Initial Registration Statement payment shall be used to offset the $1,418.00 payment due with respect to the increase in the Class A ordinary shares underlying the rights included as part of the units being registered as part of this filing.