TD Ameritrade is full of you-know-what. They cannot do as they please with people’s stock. The FINRA rules prevent them from doing so. They must have a court or your authorization to cancel your stock. In any event, TD is required to send you (A) the worthless securities or (B) a Letter of Indemnity which shall grant the purchaser any rights and privileges which might accrue to the holders of the physical securities. See the FINRA rule below.

Call Ameritrade and ask them to send you a copy of the filing that authorizes them to do so. There is no record of any public announcement or court order supporting this assertion. If they do not provide a copy of the filing, they are using to justify the stock cancellation, they are acting illegally. If they do not reinstate their shares tell them, you are reporting them to FINRA (see contact information below). It is better to file the complaint via the email link provided on the General Inquiries internet page. It provides a record of the complaint and requires a response from FINRA.

11530. Delivery of Securities Called for Redemption or Which Are Deemed Worthless

(a) Securities Called for Redemption

A certificate of stock or a bond shall cease to be a good delivery upon publication of notice of call for redemption, except when an entire issue is called for redemption and except against transactions in "called stock" or "called bonds" dealt in specifically as such.

(b) Securities Deemed Worthless

(1) In contracts for securities where a public announcement or publication of general circulation discloses that the securities have been deemed worthless, deliveries shall consist of (A) the worthless securities or (B) a Letter of Indemnity which shall grant the purchaser any rights and privileges which might accrue to the holders of the physical securities.

(2) Deliveries effected pursuant to paragraph (b)(1) shall operate to close-out the contract and must be accompanied by documentation evidencing that the security was deemed worthless after the original execution date of the contracts. Such contracts shall be settled at the existing contract price.

(3) For purposes of this paragraph (b), securities deemed worthless shall be those instruments which have no known market value.

https://www.finra.org/rules-guidance/rulebooks/finra-rules/11530

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