SEC Filing Document

Company: ERock, Inc.
Ticker: 
CIK: 2110029
Filing Type: S-1
Document Type: EX-10.16
Date Filed: 2026-05-15
Accession Number: 0001193125-26-227199
Exchange: 
SIC Code: 3620
SIC Description: Electrical Industrial Apparatus
URL: https://www.sec.gov/Archives/edgar/data/2110029/000119312526227199/d12401dex1016.htm

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Exhibit 10.16

Portions of this agreement (indicated by “[***]”) have been omitted as the Registrant has determined that: (i) the omitted
information is not material; and (ii) the omitted information is the type that the Registrant treats as private or confidential.

PROLOGIS NET LEASE

THIS LEASE is made between Landlord and Tenant as of the Effective Date below.

1.	General Defined Terms.

a) Effective Date: Dec 8, 2026

b) Landlord: Prologis, L.P., a Delaware limited partnership

c) Landlord Prologis With copy to: Prologis

d) Notice Address: 9655 Katy Freeway, Suite 1800 Wazee Street

400 Suite 500

Houston, Texas 77024 Denver, CO 80202

e) Tenant: ENCHANTED ROCK, LLC, a Texas corporation

f) Tenant Notice Address: 1113 Vine St., Suite 101 With copy to:

Houston, TX 77002

g) Premises: That portion of the Building containing approximately 407,302 rentable square feet as shown on Exhibit A .

h) Building: Legacy Point Bldg 5

Houston, TX

i) Project: The Building and parking areas shown on Exhibit A.

j) Tenant’s Proportionate Share of Building: 100.00%

k) Tenant’s Proportionate Share of Project: 100.00%

l) Lease Term: Beginning on the Commencement Date and ending on the day which is 89 full calendar months following the Commencement Date (the “Expiration Date”).

m) Commencement Date: 03/31/2026

Portions of this agreement (indicated by “[***]”) have been omitted as the
Registrant has determined that: (i) the omitted information is not material; and (ii) the omitted information is the type that the Registrant treats as private or confidential.

n) Monthly Base Rent: Period Monthly Base Rent

03/31/2026 - 07/31/2026 1*USD$[***]

08/01/2026 - 03/31/2027 USD$[***]

04/01/2027 - 03/31/2028 USD$[***]

04/01/2028 - 03/31/2029 USD$[***]

04/01/2029 - 03/31/2030 USD$[***]

04/01/2030 - 03/31/2031 USD$[***]

04/01/2031 - 03/31/2032 USD$[***]

04/01/2032 - 03/31/2033 USD$[***]

04/01/2033 - 08/31/2033 USD$[***]

1*Monthly Base Rent of USD$[***] is abated for this period

o) Initial Estimated Monthly Operating Expenses: Taxes:
Common Area Expenses:
Insurance:
Amortized CAM Recoveries (ACR):
Management Fee:
Total: USD$[***]
USD$[***]
USD$[***]
USD$[***]
USD$[***]
USD$[***]
USD$[***]

p) Security Deposit: USD$[***]

q) Landlord Broker: Colliers

r) Tenant Broker: None

s) Guarantor:

t) Exhibits: Exhibit A - Site Plan

Exhibit B - Project Rules and Regulations

Exhibit C - HVAC Maintenance Contract

Exhibit D - Move-Out Conditions

Exhibit E - One Renewal Option at Market

Exhibit F - Storage and Use of Permitted Hazardous Materials

Exhibit G - Collateral Access Agreement (Form)

Exhibit H - Approved Office Alterations

Exhibit I - Termination Option

Portions of this agreement (indicated by “[***]”) have been omitted as the
Registrant has determined that: (i) the omitted information is not material; and (ii) the omitted information is the type that the Registrant treats as private or confidential.

2. Granting Clause. In consideration for performance of Tenant’s obligations under
this Lease, Landlord leases to Tenant, and Tenant takes from Landlord, the Premises for the Lease Term, subject to the provisions of this Lease. Each party represents and warrants to the other that the individual executing this Lease on behalf of
such party is authorized to do so, and that such party has taken all necessary actions for this Lease to be binding and enforceable.

Acceptance of Premises. Tenant accepts the Premises in its “as-is” condition as of the Commencement Date. Tenant waives any implied warranty that the Premises is suitable for
Tenant’s intended purposes. Within 10 days after request, Tenant shall execute and deliver to Landlord a certificate stating the Commencement Date of the Lease. Occupation of the Premises by Tenant prior to the Commencement Date shall be
subject to all obligations of Tenant under this Lease except for the payment of Monthly Base Rent and Operating Expenses.

Landlord shall allow Tenant
access to the Premises approximately 60 days prior to the Commencement Date, for purposes of preparing the Premises for the commencement of Tenant’s normal business operations, subject to applicable ordinances and building codes governing
Tenant’s right to occupy or perform in the Premises (“Early Occupancy”). During such Early Occupancy period prior to the Commencement Date, Tenant shall be bound by its obligations under the Lease, including the obligation to
provide evidence of insurance, but shall not be obligated to pay the Monthly Base Rent payable by Tenant to Landlord as set forth in the Lease.

Landlord
represents and warrants that as of the Commencement Date the Premises’ HVAC, electrical, plumbing and other mechanical systems are in good working order.

4. Use. The Premises shall be used only for the purpose of receiving, storing, shipping, light manufacturing, and selling (but
specifically excluding retail selling) products, and for such other incidental lawful uses. Tenant shall not conduct any public sale at the Premises, use the Premises as a place of public accommodation under the Americans With Disabilities Act or
any other Legal Requirements, or permit any nuisance at the Premises. Tenant shall use the Premises in compliance with all federal, state, and local laws, orders, judgments, ordinances, regulations, codes, permits, licenses, covenants, and
restrictions now or hereafter applicable to the Premises (collectively, “ Legal Requirements”). Tenant shall, at its expense, make any alterations or modifications to the Premises or common areas that are required by Legal
Requirements to the extent due to Tenant’s specific use or occupation of the Premises.

Subject to applicable Legal Requirements, Tenant shall be
permitted to test and store generators, generator components, and related equipment in outside areas of the Building, provided all such areas are kept clean and orderly in a manner reasonable acceptable to Landlord. In the event Tenant complies with
the terms of this paragraph and receives noise complaints relating to the testing contemplated herein, Landlord shall make commercially reasonable efforts to make reasonable improvements to the Project so as to resolve said complaints and to allow
Tenant to continue such testing.

5. Base Rent. Upon execution of this Lease, Tenant shall pay to Landlord the first payment of
Monthly Base Rent and Operating Expenses payable under the Lease, and thereafter Tenant shall pay all such payments in advance, without demand, no later than the first day of each calendar month following the Commencement Date (prorated for any
fractional calendar month). Tenant

Portions of this agreement (indicated by “[***]”) have been omitted as the
Registrant has determined that: (i) the omitted information is not material; and (ii) the omitted information is the type that the Registrant treats as private or confidential.

shall make all payments to Landlord (or to such other party or at such location as Landlord may from time to time specify in writing) by Electronic Fund Transfer or Automated Clearing House.
Tenant’s payment obligations and Landlord’s obligations under this Lease are independent obligations. Tenant shall not abate, reduce, or set-off any amounts payable except as may be expressly
provided in this Lease. Without limiting Landlord’s other rights and remedies, if Tenant is delinquent in any payment due for more than 5 days, Tenant shall pay to Landlord on demand as a late charge (and not as a penalty) an amount equal to
[***] percent ([***]%) of the delinquent sum.