The break-up plan was announced last November after a five-month strategic review following years of accounting scandals and governance issues that undermined investor confidence and saw Toshiba's market value more than halved, to around $18 billion, from an early 2000s peak.
If 3D's proposal for the meeting were to be accepted, it would trigger a vote that could ultimately scupper the break-up plan, a strategy that carries echoes of a similar move announced last year by General Electric Co.
3D owns more than 7% of Toshiba, a stake worth well over a billion dollars. In a statement, it highlighted concerns about the cost of going ahead with the split before getting a mandate from shareholders, and called for Toshiba to resume its strategic review.