SCHEDULE 13G

CUSIP Number(s):

03211Q200

1

Names of Reporting Persons

G1 Execution Services, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

3

Sec Use Only

4

Citizenship or Place of Organization

ILLINOIS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 11,129.00
6	Shared Voting Power 1,744,929.00
7	Sole Dispositive Power 11,129.00
8	Shared Dispositive Power 1,744,929.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,744,929.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

11

Percent of class represented by amount in row (9)

6.9 %

12

Type of Reporting Person (See Instructions)

BD, OO

Comment for Type of Reporting Person: With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP and Susquehanna Securities, LLC are affiliated independent broker-dealers, which may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person.

SCHEDULE 13G

CUSIP Number(s):

03211Q200

1

Names of Reporting Persons

SIG Brokerage, LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 49,282.00
6	Shared Voting Power 1,744,929.00
7	Sole Dispositive Power 49,282.00
8	Shared Dispositive Power 1,744,929.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,744,929.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

11

Percent of class represented by amount in row (9)

6.9 %

12

Type of Reporting Person (See Instructions)

BD, PN

Comment for Type of Reporting Person: With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP and Susquehanna Securities, LLC are affiliated independent broker-dealers, which may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person.

SCHEDULE 13G

CUSIP Number(s):

03211Q200

1

Names of Reporting Persons

Susquehanna Securities, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,684,518.00
6	Shared Voting Power 1,744,929.00
7	Sole Dispositive Power 1,684,518.00
8	Shared Dispositive Power 1,744,929.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,744,929.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

11

Percent of class represented by amount in row (9)

6.9 %

12

Type of Reporting Person (See Instructions)

BD, OO

Comment for Type of Reporting Person: With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP and Susquehanna Securities, LLC are affiliated independent broker-dealers, which may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person.

SCHEDULE 13G

Item 1.

(a)

Name of issuer:

AmpliTech Group, Inc.

(b)

Address of issuer's principal executive offices:

155 Plant Avenue, Hauppauge, NY 11788

Item 2.

(a)

Name of person filing:

This statement is filed by the entities listed below, who are collectively referred to herein as "Reporting Persons" with respect to the shares of Common Stock, $0.001 par value per share (the "Shares"), of AmpliTech Group, Inc. (the "Company"). (i) G1 Execution Services, LLC (ii) SIG Brokerage, LP (iii) Susquehanna Securities, LLC

(b)

Address or principal business office or, if none, residence:

The address of the principal business office of G1 Execution Services, LLC is: 175 W. Jackson Blvd. Suite 1700 Chicago, IL 60604 The address of the principal business office of each of SIG Brokerage, LP and Susquehanna Securities, LLC is: 401 E. City Avenue Suite 220 Bala Cynwyd, PA 19004

(c)

Citizenship:

Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.

(d)

Title of class of securities:

Common Stock, $0.001 par value per share

(e)

CUSIP Number(s):

03211Q200

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 Act (15 U.S.C. 78o);

(b)

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

Insurance company as defined in section 3(a)(19) of the 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)

An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)

An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

A 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)

A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:

(k)

Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

Item 4.

Ownership

(a)

Amount beneficially owned:

The information required by this Item 4(a) is set forth in Row 9 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The number of Shares reported as beneficially owned by SIG Brokerage, LP includes options to buy 27,500 Shares. The number of Shares reported as beneficially owned by Susquehanna Securities, LLC includes options to buy 1,683,000 Shares. The Company's Quarterly Report on Form 10-Q, filed on May 13, 2026, indicates that there were 25,338,799 Shares outstanding as of May 11, 2026.

(b)

Percent of class:

6.9 %

(c)

Number of shares as to which the person has:

(i) Sole power to vote or to direct the vote:

The information required by this Item 4(c)(i) is set forth in Row 5 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.

(ii) Shared power to vote or to direct the vote:

The information required by this Item 4(c)(ii) is set forth in Row 6 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.

(iii) Sole power to dispose or to direct the disposition of:

The information required by this Item 4(c)(iii) is set forth in Row 7 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.

(iv) Shared power to dispose or to direct the disposition of:

The information required by this Item 4(c)(iv) is set forth in Row 8 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.

Item 5.

Ownership of 5 Percent or Less of a Class.

Not Applicable

Item 6.

Ownership of more than 5 Percent on Behalf of Another Person.

Not Applicable

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.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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.

G1 Execution Services, LLC

Signature:	/s/ Brian Sopinsky
Name/Title:	Brian Sopinsky, Secretary
Date:	08/14/2026

SIG Brokerage, LP

Signature:	/s/ Brian Sopinsky
Name/Title:	Brian Sopinsky, Assistant Secretary
Date:	08/14/2026

Susquehanna Securities, LLC

Signature:	/s/ Brian Sopinsky
Name/Title:	Brian Sopinsky, Secretary
Date:	08/14/2026

Exhibit Information

EXHIBIT INDEX EXHIBIT DESCRIPTION ________ ________ 99 Joint Filing Agreement