1 | Names of Reporting Persons
Mercury Fund Ventures III, L.P. |
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
185,862.00 | 6 | Shared Voting Power
0.00 | 7 | Sole Dispositive Power
185,862.00 | 8 | Shared Dispositive Power
0.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
185,862.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
3.0 % |
12 | Type of Reporting Person (See Instructions)
PN |
Comment for Type of Reporting Person:
Note to Row 5: 185,862 shares, except that Mercury Fund Partners III, L.P. ("GP III"), the general partner of Mercury Fund Ventures III, L.P. ("Fund III"), may be deemed to have sole voting power, Mercury Partners, LLC ("UGP III"), the general partner of GP III, may be deemed to have sole voting power, and Blair Garrou ("Garrou") and Dan Watkins ("Watkins"), the managers of UGP III, may be deemed to have shared power to vote these shares.
Note to row 6: See response to row 5.
Note to Row 7: 185,862 shares, except that GP III, the general partner of Fund III, may be deemed to have sole dispositive power, and UGP III, the general partner of GP III, may be deemed to have sole dispositive power, and Garrou and Watkins, the managers of UGP III, may be deemed to have shared power to dispose of these shares.
Note to row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of Benson Hill, Inc. (the "Issuer") as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Mercury Fund Affiliates III, L.P. |
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
8,756.00 | 6 | Shared Voting Power
0.00 | 7 | Sole Dispositive Power
8,756.00 | 8 | Shared Dispositive Power
0.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
8,756.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
0.1 % |
12 | Type of Reporting Person (See Instructions)
PN |
Comment for Type of Reporting Person:
Note to Row 5: 8,756 shares, except that GP III, the general partner of Mercury Fund III Affiliates, L.P. ("Affiliates III"), may be deemed to have sole voting power, UGP III, the general partner of GP III, may be deemed to have sole voting power, and Garrou and Watkins, the managers of UGP III, may be deemed to have shared power to vote these shares.
Note to row 6: See response to row 5.
Note to Row 7: 8,756 shares, except that GP III, the general partner of Affiliates III, may be deemed to have sole dispositive power, and UGP III, the general partner of GP III, may be deemed to have sole dispositive power, and Garrou and Watkins, the managers of UGP III, may be deemed to have shared power to dispose of these shares.
Note to row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Mercury Fund Partners III, L.P. |
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
194,618.00 | 6 | Shared Voting Power
0.00 | 7 | Sole Dispositive Power
194,618.00 | 8 | Shared Dispositive Power
0.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
194,618.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
3.2 % |
12 | Type of Reporting Person (See Instructions)
PN |
Comment for Type of Reporting Person:
Note to Row 5: 194,618 shares of which 185,862 are directly owned by Fund III and 8,756 are owned directly by Affiliates III. GP III, the general partner of Fund III and Affiliates III, may be deemed to have sole voting power, UGP III, the general partner of GP III, may be deemed to have sole voting power, and Garrou and Watkins, the managing managers of UGP III, may be deemed to have shared power to vote these shares.
Note to row 6: See response to row 5.
Note to Row 7: 194,618 shares of which 185,862 are directly owned by Fund III and 8,756 are owned directly by Affiliates III. GP III, the general partner of Affiliates III, may be deemed to have sole dispositive power, and UGP III, the general partner of GP III, may be deemed to have sole dispositive power, and Garrou and Watkins, the managers of UGP III, may be deemed to have shared power to dispose of these shares.
Note to row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Mercury Partners, 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
194,618.00 | 6 | Shared Voting Power
0.00 | 7 | Sole Dispositive Power
194,618.00 | 8 | Shared Dispositive Power
0.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
194,618.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
3.2 % |
12 | Type of Reporting Person (See Instructions)
OO |
Comment for Type of Reporting Person:
Note to Row 5: 194,618 shares of which 185,862 are directly owned by Fund III and 8,756 are owned directly by Affiliates III. GP III, the general partner of Fund III and Affiliates III, may be deemed to have sole voting power, UGP III, the general partner of GP III, may be deemed to have sole voting power, and Garrou and Watkins, the managers of UGP III, may be deemed to have shared power to vote these shares.
Note to row 6: See response to row 5.
Note to Row 7: 194,618 shares of which 185,862 are directly owned by Fund III and 8,756 are owned directly by Affiliates III. GP III, the general partner of Affiliates III, may be deemed to have sole dispositive power, and UGP III, the general partner of GP III, may be deemed to have sole dispositive power, and Garrou and Watkins, the managers of UGP III, may be deemed to have shared power to dispose of these shares.
Note to row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Mercury Camelback Fund, 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
189,519.00 | 6 | Shared Voting Power
0.00 | 7 | Sole Dispositive Power
189,519.00 | 8 | Shared Dispositive Power
0.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
189,519.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
3.1 % |
12 | Type of Reporting Person (See Instructions)
OO |
Comment for Type of Reporting Person:
Note to Row 5: 189,519 shares, except that Mercury Partners Management, LLC ("MM"), the managing member of Mercury Camelback Fund, LLC ("Camelback"), may be deemed to have sole voting power, and Fortino, Garrou and Gilani, the managing members of MM, may be deemed to have shared power to vote these shares.
Note to row 6: See response to row 5.
Note to Row 7: 189,519 shares, except that MM, the managing member of Camelback, may be deemed to have sole dispositive power, and Fortino, Garrou and Gilani, the managing members of MM, may be deemed to have shared power to dispose of these shares.
Note to row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Mercury Partners Management, 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
189,519.00 | 6 | Shared Voting Power
0.00 | 7 | Sole Dispositive Power
189,519.00 | 8 | Shared Dispositive Power
0.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
189,519.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
3.1 % |
12 | Type of Reporting Person (See Instructions)
OO |
Comment for Type of Reporting Person:
Note to Row 5: 189,519 shares, all of which are directly owned by Camelback. MM, the managing member of Camelback, may be deemed to have sole voting power, and Fortino, Garrou and Gilani, the managing members of MM, may be deemed to have shared power to vote these shares.
Note to row 6: See response to row 5.
Note to Row 7: 189,519 shares, all of which are directly owned by Camelback. MM, the managing member of Camelback, may be deemed to have sole dispositive power, and Fortino, Garrou and Gilani, the managing members of MM, may be deemed to have shared power to dispose of these shares.
Note to row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Adrian Fortino |
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
UNITED STATES |
Number of Shares Beneficially Owned by Each
Reporting Person With: | 5 | Sole Voting Power
0.00 | 6 | Shared Voting Power
189,519.00 | 7 | Sole Dispositive Power
0.00 | 8 | Shared Dispositive Power
189,519.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
189,519.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
3.1 % |
12 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
Note to Row 6: 189,519 shares, all of which are directly owned by Camelback. MM, the managing member of Camelback, may be deemed to have sole voting power, and Fortino, a managing member of MM, may be deemed to have shared power to vote these shares.
Note to Row 8: 189,519 shares, all of which are directly owned by Camelback. MM, the managing member of Camelback, may be deemed to have sole dispositive power, and Fortino, a managing member of MM, may be deemed to have shared power to dispose these shares.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Blair Garrou |
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
UNITED STATES |
Number of Shares Beneficially Owned by Each
Reporting Person With: | 5 | Sole Voting Power
0.00 | 6 | Shared Voting Power
384,137.00 | 7 | Sole Dispositive Power
0.00 | 8 | Shared Dispositive Power
384,137.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
384,137.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
6.3 % |
12 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
Note to Row 6: 384,137 shares of which 185,862 are directly owned by Fund III, 8,756 are owned directly by Affiliates III and 189,519 are owned directly by Camelback. GP III, the general partner of Fund III and Affiliates III, may be deemed to have sole voting power over the shares owned by Fund III and Affiliates III, UGP III, the general partner of GP III, may be deemed to have sole voting power over the shares owned by Fund III and Affiliates III. MM, the managing member of Camelback, may be deemed to have sole voting power over the shares owned by Camelback. Garrou, a manager of UGP III and a managing member of MM, may be deemed to have shared voting power over the shares owned by Fund III, Affiliates IIII and Camelback.
Note to Row 8: 384,137 shares of which 185,862 are directly owned by Fund III, 8,756 are owned directly by Affiliates III and 189,519 are owned directly by Camelback. GP III, the general partner of Fund IIII and Affiliates III, may be deemed to have sole dispositive power over the shares owned by Fund III and Affiliates III, and UGP III, the general partner of GP III, may be deemed to have sole dispositive power over the shares owned by Fund III and Affiliates III. MM, the managing member of Camelback, may be deemed to have sole dispositive power over the shares owned by Camelback. Garrou, a manager of UGP III and a managing member of MM, may be deemed to have shared dispositive power over the shares owned by Fund III, Affiliates IIII and Camelback
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Aziz Gilani |
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
UNITED STATES |
Number of Shares Beneficially Owned by Each
Reporting Person With: | 5 | Sole Voting Power
0.00 | 6 | Shared Voting Power
189,519.00 | 7 | Sole Dispositive Power
0.00 | 8 | Shared Dispositive Power
189,519.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
189,519.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
3.1 % |
12 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
Note to Row 6: 189,519 shares, all of which are directly owned by Camelback. MM, the managing member of Camelback, may be deemed to have sole voting power, and Gilani, a managing member of MM, may be deemed to have shared power to vote these shares.
Note to Row 8: 189,519 shares, all of which are directly owned by Camelback. MM, the managing member of Camelback, may be deemed to have sole dispositive power, and Gilani, a managing member of MM, may be deemed to have shared power to dispose these shares.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.
1 | Names of Reporting Persons
Dan Watkins |
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
UNITED STATES |
Number of Shares Beneficially Owned by Each
Reporting Person With: | 5 | Sole Voting Power
0.00 | 6 | Shared Voting Power
194,618.00 | 7 | Sole Dispositive Power
0.00 | 8 | Shared Dispositive Power
194,618.00 |
|
9 | Aggregate Amount Beneficially Owned by Each Reporting
Person
194,618.00 |
10 | Check box if the aggregate amount in row (9) excludes
certain shares (See Instructions)
 |
11 | Percent of class represented by amount in row (9)
3.2 % |
12 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
Note to Row 6: 194,618 shares of which 185,862 are directly owned by Fund III and 8,756 are owned directly by Affiliates III. GP III, the general partner of Fund III and Affiliates III, may be deemed to have sole voting power over the shares owned by Fund III and Affiliates III, UGP III, the general partner of GP III, may be deemed to have sole voting power over these shares. Watkins, a manager of UGP III, may be deemed to have shared voting power over these shares.
Note to Row 8: 194,618 shares of which 185,862 are directly owned by Fund III and 8,756 are owned directly by Affiliates III. GP III, the general partner of Fund IIII and Affiliates III, may be deemed to have sole dispositive power over the shares owned by Fund III and Affiliates III, and UGP III, the general partner of GP III, may be deemed to have sole dispositive power over these shares. Watkins, a manager of UGP III, may be deemed to have shared dispositive power over these shares.
Note to Row 11: This percentage is calculated based upon 6,114,020 Common Stock outstanding of the Issuer as of November 7, 2024, as set forth in the Issuer's prospectus on Form 10-Q filed with the Securities and Exchange Commission on November 12, 2024.