If living within a development under the Maryland Homeowners Association Act, per
§11B–111 (in part [emphasis added]):
Except as provided in this title, and notwithstanding anything contained in any of the documents of the homeowners association:
(1) Subject to the provisions of item (4) of this section, all meetings of the homeowners association, including meetings of the board of directors or other governing body of the homeowners association or
a committee of the homeowners association, shall be open to all members of the homeowners association or their agents;
If living within a development under the Maryland Condominium Association Act,
§11–109. (in part [emphasis added]):
(6) Except as provided in § 11–109.1 of this title,
a meeting of a governing body shall be open and held at a time and location as provided in the notice or bylaws.
Per
§11–101 (in part [emphasis added]):
(i) “Governing body” means the council of unit owners, board of directors,
or any committee of the council of unit owners or board of directors.
Therefore, the answer to your question is YES committee meetings of HOAs or COAs must be open to the membership.
Your board should know that committee meetings are to be open to the membership but might not (as we are all human and make mistakes).
My suggestion: contact your board in writing and politely request to be notified when the meetings are so you might attend.
Reference the applicable law.
If your board fails to reply, send the request again via certified mail.
If your board still fails to reply OR if your board denies your request, you can file a complaint by contacting the Consumer Protection Division of the Maryland Attorney General's Office:
File a Consumer Complaint has contact info at the bottom of the page.