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Found on 2026-09-19 by searching a second elliptic fibration of the D=26 K3 companion at moduli parameter j=-2. The source equation is Y^2=X^3+t^3(72900-3267t)X-t^5(43040889+405756t+729t^2). Setting u=X/t^2 gives a rational-2-torsion pencil; this curve is its fiber u=-60 (scaled parameter v=20). Candidates were selected by a Mestre-Nagao prime-sum sieve through 251 on a reduced-rational box |numerator(v)|<=256, denominator(v)<=8, followed by Magma descent and rational-point computations. In a fresh process with rigorous Minkowski class-group bounds, Magma verified the five submitted points, their independence modulo torsion, and unconditional rank bounds [5,5]. Thus the rank is exactly 5. Magma also verified global minimality, torsion Z/2, and conductor 9353416128. The exact map back to the source K3 is t=-(x+195), X=-60t^2, Y=27t^2y. The submitted points are independent witnesses; they are not claimed to be a saturated basis.