UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

(Amendment No. __)*

Under the Securities Exchange Act of 1934

Ouster, Inc.

(f/k/a Colonnade Acquisition Corp.)

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Titles of Class of Securities)

G2283K110

(CUSIP Number)

March 11, 2021

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

☐ Rule 13d-1(b)

☒ Rule 13d-1(c)

☐ Rule 13d-1(d)

* The remainder of this cover page shall be filled out of a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

1	NAME OF REPORTING PERSON Krishna Kantheti
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0
	6	SHARED VOTING POWER 26,080,198
	7	SOLE DISPOSITIVE POWER 0
	8	SHARED DISPOSITIVE POWER 26,080,198
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 26,080,198
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 16.2%*
12	TYPE OF REPORTING PERSON IN

* The calculation of the percentages herein is based on 161,449,205 shares of common stock outstanding as of March 10, 2021, as disclosed in the Issuer’s Form 8-K filed March 15, 2021.

1	NAME OF REPORTING PERSON Banyan Venture Holdings LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0
	6	SHARED VOTING POWER 26,080,198
	7	SOLE DISPOSITIVE POWER 0
	8	SHARED DISPOSITIVE POWER 26,080,198
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 26,080,198
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 16.2%
12	TYPE OF REPORTING PERSON OO

Item 1(a).

Name of Issuer:

Ouster, Inc. (f/k/a Colonnade Acquisition Corp.)

Item 1(b).

Address of Issuer’s Principal Executive Offices:

1400 Centrepark Blvd, Suite 810

West Palm Beach, FL 33401

Item 2(a).

Name of Person Filing:

This Statement is being filed on behalf of (i) Krishna Kantheti and (ii) Banyan Venture Holdings LLC (together, the “Reporting Persons”).

Item 2(b).

Address of Principal Business Office or, if None, Residence:

The business address of the Reporting Persons is c/o Banyan Venture Holdings LLC, 500 108th Ave NE, Suite 1100, Bellevue, WA 98004.

Item 2(c).

Citizenship:

See responses to Item 4 on each cover page.

Item 2(d).

Titles of Class of Securities:

Common Stock, par value $0.0001 per share

Item 2(e).

CUSIP Number:

G2283K110.

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)	☐	Broker or dealer registered under Section 15 of the Exchange Act (15 U.S.C. 78o).

(b)	☐	Bank as defined in Section 3(a)(6) of the Exchange Act (15 U.S.C. 78c).

(c)	☐	Insurance company as defined in Section 3(a)(19) of the Exchange Act (15 U.S.C. 78c).

(d)	☐	Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e)	☐	Investment adviser in accordance with §240.13d-1(b)(1)(ii)(E).

(f)	☐	Employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F).

(g)	☐	Parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G).

(h)	☐	Savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813).

(i)	☐	Church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3).

(j)	☐	Non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J).

(k)	☐	Group in accordance with §240.13d-1(b)(1)(ii)(K).

If filing as a non-U.S. institution in accordance with §240. 13d-1(b)(1)(ii)(J), please specify the type of institution: ______________ .

Item 4.

Ownership

(a)	Amount beneficially owned:

See responses to Item 9 on each cover page.

(b)	Percent of class:

See responses to Item 11 on each cover page.

(c)	Number of shares as to which such person has:

(i)

Sole power to vote or to direct the vote:

See responses to Item 5 on each cover page.

(ii)

Shared power to vote or to direct the vote:

See responses to Item 6 on each cover page.

(iii)

Sole power to dispose or to direct the disposition of:

See responses to Item 7 on each cover page.

(iv)

Shared power to dispose or to direct the disposition of:

See responses to Item 8 on each cover page.

Item 5.

Ownership of Five Percent or Less of a Class.

Not applicable

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

None.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

Not Applicable.

Item 8.

Identification and Classification of Members of the Group.

Not Applicable.

Item 9.

Notice of Dissolution of Group.

Not Applicable.

Item 10.

Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: March 18, 2021

/s/ Krishna Kantheti
Name:	Krishna Kantheti


Banyan Venture Holdings LLC

By:	/s/ Krishna Kantheti
	Name:	Krishna Kantheti
	Title:	Manager

Exhibit Index

Exhibit 1

Agreement of Joint Filing.