SEC Filing Document

Company: BIOVENTRIX, INC.
Ticker: 
CIK: 1283259
Filing Type: S-1/A
Document Type: EX-3.6
Date Filed: 2026-03-18
Accession Number: 0001493152-26-010642
Exchange: 
SIC Code: 3841
SIC Description: Surgical & Medical Instruments & Apparatus
URL: https://www.sec.gov/Archives/edgar/data/1283259/000149315226010642/ex3-6.htm

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Exhibit 3.6

AMENDED
AND RESTATED BYLAWS

BIOVENTRIX,
INC.

(THE
“CORPORATION”)

ARTICLE

OFFICES

Section
1.1. Registered Office. The registered office of the Corporation within the State of Delaware shall be located at either (a) the
principal place of business of the Corporation in the State of Delaware or (b) the office of the corporation or individual acting as
the Corporation’s registered agent in Delaware.

Section
1.2. Additional Offices. The Corporation may, in addition to its registered office in the State of Delaware, have such other offices
and places of business, both within and outside the State of Delaware, as the Board of Directors of the Corporation (the “Board”)
may from time to time determine or as the business and affairs of the Corporation may require.

ARTICLE

STOCKHOLDERS
MEETINGS

Section
2.1. Annual Meetings. The annual meeting of stockholders shall be held at such place, either within or without the State of Delaware,
and at such time and on such date as shall be determined by the Board and stated in the notice of the meeting, provided that the Board
may in its sole discretion determine that the meeting shall not be held at any place, but may instead be held solely by means of remote
communication pursuant to Section 10.5(a). At each annual meeting, the stockholders entitled to vote on such matters shall elect
those directors of the Corporation to fill any term of a directorship that expires on the date of such annual meeting and may transact
any other business as may properly be brought before the meeting.

Section
2.2. Special Meetings. Subject to the rights of the holders of any outstanding series of the preferred stock of the Corporation (“Preferred
Stock”), and to the requirements of applicable law, special meetings of stockholders, for any purpose or purposes, shall
be called only by the Board and may not be called by any other person or persons. Special meetings of stockholders shall be held at such
place, either within or without the State of Delaware, and at such time and on such date as shall be determined by the Board and stated
in the Corporation’s notice of the meeting, provided that the Board may in its sole discretion determine that the meeting shall
not be held at any place, but may instead be held solely by means of remote communication pursuant to Section 9.5(a).

Section
2.3. Notices. Written notice of each stockholders meeting stating the place, if any, date, and time of the meeting, and the means
of remote communication, if any, by which stockholders and proxy holders may be deemed to be present in person and vote at such meeting
and the record date for determining the stockholders entitled to vote at the meeting, if such date is different from the record date
for determining stockholders entitled to notice of the meeting, shall be given in the manner permitted by Section 9.3 to each
stockholder entitled to vote thereat as of the record date for determining the stockholders entitled to notice of the meeting, by the
Corporation not less than 10 nor more than 60 days before the date of the meeting unless otherwise required by the General Corporation
Law of the State of Delaware (the “DGCL”). If said notice is for a stockholders meeting other than an annual
meeting, it shall in addition state the purpose or purposes for which the meeting is called, and the business transacted at such meeting
shall be limited to the matters so stated in the Corporation’s notice of meeting (or any supplement thereto). Any meeting of stockholders
as to which notice has been given may be postponed, and any meeting of stockholders as to which notice has been given may be cancelled,
by the Board upon public announcement (as defined in Section 2.7(c)) given before the date previously scheduled for such meeting.

Section
2.4. Quorum. Except as otherwise provided by applicable law, the Corporation’s Certificate of Incorporation, as the same may
be amended or restated from time to time (the “Certificate of Incorporation”) or these Bylaws, the presence,
in person or by proxy, at a stockholders meeting of the holders of shares of outstanding capital stock of the Corporation representing
one-third (1/3) of the voting power of all outstanding shares of capital stock of the Corporation entitled to vote at such meeting shall
constitute a quorum for the transaction of business at such meeting, except that when specified business is to be voted on by a class
or series of stock voting as a class, the holders of shares representing a majority of the voting power of the outstanding shares of
such class or series shall constitute a quorum of such class or series for the transaction of such business. If a quorum shall not be
present or represented by proxy at any meeting of the stockholders of the Corporation, the chairman of the meeting may adjourn the meeting
from time to time in the manner provided in Section 2.6 until a quorum shall attend. The stockholders present at a duly convened
meeting may continue to transact business until adjournment, notwithstanding the withdrawal of enough stockholders to leave less than
a quorum. Shares of its own stock belonging to the Corporation or to another corporation, if a majority of the voting power of the shares
entitled to vote in the election of directors of such other corporation is held, directly or indirectly, by the Corporation, shall neither
be entitled to vote nor be counted for quorum purposes; provided, however, that the foregoing shall not limit the right of the Corporation
or any such other corporation to vote shares held by it in a fiduciary capacity.

Section
2.5. Voting of Shares.

Voting Lists. The Secretary of the Corporation (the “Secretary”) shall prepare, or shall cause the officer
or agent who has charge of the stock ledger of the Corporation to prepare and make, at least 10 days before every meeting of stockholders,
a complete list of the stockholders of record entitled to vote at such meeting; provided, however, that if the record date for determining
the stockholders entitled to vote is less than 10 days before the meeting date, the list shall reflect the stockholders entitled to vote
as of the tenth day before the meeting date, arranged in alphabetical order and showing the address and the number and class of shares
registered in the name of each stockholder. Nothing contained in this Section 2.5(a) shall require the Corporation to include electronic
mail addresses or other electronic contact information on such list. Such list shall be open to the examination of any stockholder, for
any purpose germane to the meeting, during ordinary business hours for a period of at least 10 days prior to the meeting: (i) on a reasonably
accessible electronic network, provided that the information required to gain access to such list is provided with the notice of the
meeting, or (ii) during ordinary business hours, at the principal place of business of the Corporation. In the event that the Corporation
determines to make the list available on an electronic network, the Corporation may take reasonable steps to ensure that such information
is available only to stockholders of the Corporation. If the meeting is to be held at a place, then the list shall be produced and kept
at the time and place of the meeting during the whole time thereof, and may be inspected by any stockholder who is present. If a meeting
of stockholders is to be held solely by means of remote communication as permitted by Section 9.5(a), the list shall be open to the examination
of any stockholder during the whole time of the meeting on a reasonably accessible electronic network, and the information required to
access such list shall be provided with the notice of meeting. The stock ledger shall be the only evidence as to who are the stockholders
entitled to examine the list required by this Section 2.5(a) or to vote in person or by proxy at any meeting of stockholders.

Manner of Voting. At any stockholders meeting, every stockholder entitled to vote may vote in person or by proxy. If authorized
by the Board, the voting by stockholders or proxy holders at any meeting conducted by remote communication may be effected by a ballot
submitted by electronic transmission (as defined in Section 9.3), provided that any such electronic transmission must either set
forth or be submitted with information from which the Corporation can determine that the electronic transmission was authorized by the
stockholder or proxy holder. The Board, in its discretion, or the chairman of the meeting of stockholders, in such person’s discretion,
may require that any votes cast at such meeting shall be cast by written ballot.