Exhibit 99.1

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Docket #0513 Date Filed: 10/14/2026

UNITED STATES BANKRUPTCY COURT

      DISTRICT OF DELAWARE

Monthly Operating Report						Chapter 11
Reporting Period Ended: 08/31/2026				Petition Date: 06/23/2026
Months Pending: 2				Industry Classification:
Reporting Method:		Accrual Basis		Cash Basis
Debtor’s Full-Time Employees (current):				73
Debtor’s Full-Time Employees (as of date of order for relief):				74

Supporting Documentation (check all that are attached):

(For jointly administered debtors, any required schedules must be provided on a non-consolidated basis for each debtor)

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Part 1: Cash Receipts and Disbursements				Current Month				Cumulative
a.		Cash balance beginning of month		$	16,906,954
b.		Total receipts (net of transfers between accounts)		$	10,145,433			$	38,707,494
c.		Total disbursements (net of transfers between accounts)		$	3,826,691			$	20,338,902
d.		Cash balance end of month (a+b-c)		$	23,225,696
e.		Disbursements made by third party for the benefit of the estate		$	0			$	0
f.		Total disbursements for quarterly fee calculation (c+e)		$	3,826,691			$	20,338,902
Part 2: Asset and Liability Status (Not generally applicable to Individual Debtors. See Instructions.)				Current Month
a.		Accounts receivable (total net of allowance)		$	90,355
b.		Accounts receivable over 90 days outstanding (net of allowance)		$	90,355
c.		Inventory (Book    Market    Other    (attach explanation))		$	0
d		Total current assets		$	25,398,606
e.		Total assets		$	147,881,705
f.		Postpetition payables (excluding taxes)		$	28,270,062
g.		Postpetition payables past due (excluding taxes)		$	768,173
h.		Postpetition taxes payable		$	308,160
i.		Postpetition taxes past due		$	0
j.		Total postpetition debt (f+h)		$	28,578,222
k.		Prepetition secured debt		$	0
l.		Prepetition priority debt		$	32,543
m.		Prepetition unsecured debt		$	78,651,484
n.		Total liabilities (debt) (j+k+l+m)		$	107,262,249
o.		Ending equity/net worth (e-n)		$	40,619,456
Part 3: Assets Sold or Transferred				Current Month				Cumulative
a.		Total cash sales price for assets sold/transferred outside the ordinary course of business		$	2,300,000			$	2,300,000
b.		Total payments to third parties incident to assets being sold/transferred outside the ordinary course of business		$	0			$	0
c.		Net cash proceeds from assets sold/transferred outside the ordinary course of business (a-b)		$	2,300,000			$	2,300,000
Part 4: Income Statement (Statement of Operations) (Not generally applicable to Individual Debtors. See Instructions.)				Current Month				Cumulative
a.		Gross income/sales (net of returns and allowances)		$	430,190
b.		Cost of goods sold (inclusive of depreciation, if applicable)		$	0
c.		Gross profit (a-b)		$	430,190
d.		Selling expenses		$	0
e.		General and administrative expenses		$	3,679,482
f.		Other expenses		$	602,848
g.		Depreciation and/or amortization (not included in 4b)		$	137,645
h.		Interest		$	192,082
i.		Taxes (local, state, and federal)		$	0
j.		Reorganization items		$	9,979,799
k.		Profit (loss)		$	-14,449,029			$	-29,369,386

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Part 7: Questionnaire - During this reporting period:
a.   Were any payments made on prepetition debt? (if yes, see Instructions)		Yes				No
b.  Were any payments made outside the ordinary course of business without court approval? (if yes, see Instructions)		Yes				No
c.   Were any payments made to or on behalf of insiders?		Yes				No
d.  Are you current on postpetition tax return filings?		Yes				No
e.   Are you current on postpetition estimated tax payments?		Yes				No
f.   Were all trust fund taxes remitted on a current basis?		Yes				No
g.  Was there any postpetition borrowing, other than trade credit? (if yes, see Instructions)		Yes				No
h.  Were all payments made to or on behalf of professionals approved by the court?		Yes				No				N/A
i.   Do you have:   Worker’s compensation insurance?		Yes				No
If yes, are your premiums current?		Yes				No				N/A  (if no, see Instructions)
Casualty/property insurance?		Yes				No
If yes, are your premiums current?		Yes				No				N/A   (if no, see Instructions)
General liability insurance?		Yes				No
If yes, are your premiums current?		Yes				No				N/A  (if no, see Instructions)
j.   Has a plan of reorganization been filed with the court?		Yes				No
k.  Has a disclosure statement been filed with the court?		Yes				No
l.   Are you current with quarterly U.S. Trustee fees as set forth under 28 U.S.C. § 1930?		Yes				No

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Part 8: Individual Chapter 11 Debtors (Only)
a.   Gross income (receipts) from salary and wages								$   0
b.  Gross income (receipts) from self-employment								$   0
c.   Gross income from all other sources								$   0
d.  Total income in the reporting period (a+b+c)								$   0
e.   Payroll deductions								$   0
f.   Self-employment related expenses								$   0
g.  Living expenses								$   0
h.  All other expenses								$   0
i.   Total expenses in the reporting period (e+f+g+h)								$   0
j.   Difference between total income and total expenses (d-i)								$   0
k.  List the total amount of all postpetition debts that are past due								$   0
l.   Are you required to pay any Domestic Support Obligations as defined by 11 U.S.C § 101(14A)?		Yes		No
m.   If yes, have you made all Domestic Support Obligation payments?		Yes		No		N/A

Privacy Act Statement

28 U.S.C. § 589b authorizes the collection of this information, and provision of this information is mandatory under 11 U.S.C. §§ 704, 1106, and 1107. The United States Trustee will use this information to calculate statutory fee assessments under 28 U.S.C. § 1930(a)(6). The United States Trustee will also use this information to evaluate a chapter 11 debtor’s progress through the bankruptcy system, including the likelihood of a plan of reorganization being confirmed and whether the case is being prosecuted in good faith. This information may be disclosed to a bankruptcy trustee or examiner when the information is needed to perform the trustee’s or examiner’s duties or to the appropriate federal, state, local, regulatory, tribal, or foreign law enforcement agency when the information indicates a violation or potential violation of law. Other disclosures may be made for routine purposes. For a discussion of the types of routine disclosures that may be made, you may consult the Executive Office for United States Trustee’s systems of records notice, UST-001, “Bankruptcy Case Files and Associated Records.” See 71 Fed. Reg. 59,818 et seq. (Oct. 11, 2006). A copy of the notice may be obtained at the following link: http://www.justice.gov/ust/ eo/rules_regulations/index.htm. Failure to provide this information could result in the dismissal or conversion of your bankruptcy case or other action by the United States Trustee. 11 U.S.C. § 1112(b)(4)(F).

I declare under penalty of perjury that the foregoing Monthly Operating Report and its supporting documentation are true and correct and that I have been authorized to sign this report on behalf of the estate.

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IN THE UNITED STATES BANKRUPTCY COURT

FOR THE DISTRICT DELAWARE

GLOBAL NOTES AND STATEMENT OF LIMITATIONS, METHODOLOGY, AND DISCLAIMERS REGARDING THE DEBTOR’S MONTHLY OPERATING REPORT

On June 23, 2026 (the “Petition Date”), Sangamo Therapeutics, Inc. (the “Debtor”) commenced the above-captioned chapter 11 case by filing a voluntary petition for relief under chapter 11 of title 11 of the United States Code (the “Bankruptcy Code”) with the United States Bankruptcy Court for the District of Delaware (the “Court”). The Debtor is authorized to operate its business as a debtor-in-possession pursuant to sections 1107(a) and 1108 of the Bankruptcy Code.

General Methodology

The Debtor is filing its monthly operating report (the “MOR”) for the period from August 1, 2026 through August 31, 2026 (the “Reporting Period”) for purposes of complying with the monthly reporting requirements applicable in the Debtor’s chapter 11 case. The MOR is unaudited and has not been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and does not include all of the information and footnotes required by U.S. GAAP. The MOR is not intended to reconcile to any financial statements otherwise prepared or distributed by the Debtor. The MOR should not be relied upon by any persons for information relating to current or future financial condition, events, or performance of the Debtor or its affiliates, as the results of operations contained herein are not necessarily indicative of results which may be expected from any other period or for the full year and may not necessarily reflect the results of operations, financial position, and schedule of receipts and disbursements in the future.

Basis for Presentation

In preparing the MOR, the Debtor relied on financial information from its books and records at the time of such preparation. The financial information contained in the MOR is derived from the Debtor’s books and records without, among other things, all adjustments or reclassification that may be necessary or typical to accord with U.S. GAAP.

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This information has not been subjected to procedures that would typically be applied to financial information presented in accordance with U.S. GAAP or any other recognized financial reporting framework. If such procedures were applied, the Debtor believes that the financial information presented in the MOR could be subject to change, including material change.

Although the Debtor made efforts to ensure the accuracy and completeness of the MOR, given the complexity of the Debtor’s business, inadvertent errors or omissions may occur. Accordingly, the Debtor hereby reserves all rights to dispute the nature, validity, status, enforceability, or executory nature of any claim amount, agreement, representation, or other statement set forth in the MOR. Further, the Debtor reserves the right to amend or supplement the MOR, if necessary, but shall be under no obligation to do so.

Moreover, given, among other things, the uncertainty surrounding the valuation and ownership of certain assets and the valuation and nature of certain liabilities, to the extent the Debtor shows more assets than liabilities, it is not an admission that the Debtor was solvent as of the Petition Date or at any time prior to the Petition Date. Likewise, to the extent the Debtor shows more liabilities than assets, it is not an admission that the Debtor was insolvent at the Petition Date or any time prior to the Petition Date.

For the reasons discussed above, there can be no assurance that the financial information presented in the MOR is complete, and readers are strongly cautioned not to place undue reliance on the MOR.

Each signatory to the MOR has necessarily relied upon the efforts, statements, advice, and representations of personnel of the Debtor and the Debtor’s advisors and professionals. Each signatory has not (and could not have) personally verified the accuracy of each such statement, representation, and answer contained in the MOR.

Reporting Period

Unless otherwise noted herein, the MOR generally reflects the Debtor’s books and records for the applicable Reporting Period. Unless otherwise noted herein, no adjustments have been made for activity occurring after the close of the Reporting Period.

Accuracy

The financial information disclosed in the MOR was not prepared in accordance with federal or state securities laws or other applicable non-bankruptcy law or in lieu of complying with any periodic reporting requirements thereunder. Persons and entities trading in or otherwise purchasing, selling, or transferring the claims against or equity interests in the Debtor should evaluate the financial information in light of the purposes for which it was prepared. The Debtor and its advisors are not liable for and undertake no responsibility to indicate variations from securities laws in the MOR or for any evaluations of the Debtor, including of their financial condition, based on this financial information or any other information.

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Debtor in Possession Financing

On June 25, 2026, the Court entered the Interim Order (A) Authorizing the Debtor to Obtain Postpetition Financing, (B) Granting Liens and Providing Claims with Superpriority Administrative Expense Status, (C) Modifying Automatic Stay, (D) Scheduling Final Hearing, and (E) Granting Related Relief [Docket No. 63] (the “Initial Interim DIP Order”) authorizing the Debtor to enter into a senior secured superpriority debtor-in-possession term loan facility (the “Initial DIP Facility”). Prior to the Reporting Period, the Debtor drew $10,500,000 under the Initial DIP Facility. Please refer to the motion [Docket No. 10] seeking entry of the Initial Interim DIP Order for additional information regarding the Initial DIP Facility.

On July 23, 2026, the Court entered the Interim Order (A) Authorizing the Debtor to Obtain Replacement Postpetition Financing, (B) Granting Liens and Providing Claims with Superpriority Administrative Expense Status, (C) Modifying Automatic Stay, (D) Scheduling Final Hearing, and (E) Granting Related Relief [Docket No. 176] (the “Replacement Interim DIP Order”), which, among other things, authorized the Debtor to enter into a senior secured superpriority debtor-in possession term loan facility (the “Replacement DIP Facility”) with Future Solution Investments LLC (“FSI”), as lender, to replace the Initial DIP Facility. Prior to the Reporting Period, the Debtor incurred $18 million in DIP Obligations (as defined in the Replacement DIP Order) under the Replacement DIP Facility, $11,432,958 of which was paid by the Debtor or on the Debtor’s behalf to satisfy all outstanding obligations arising under the Initial DIP Facility, including all fees. Please refer to the motion [Docket No. 161] (the “Replacement DIP Motion”) seeking entry of the Replacement Interim DIP Order for additional information regarding the Replacement DIP Facility.

On August 20, 2026, the Court entered an order [Docket No. 360] (the “Replacement Final DIP Order,” and together with the Initial Interim DIP Order and the Replacement Interim DIP Order, the “DIP Orders”) granting the relief requested in the Replacement DIP Motion on a final basis. The Final Replacement DIP Order authorized the Debtor to borrow up to $35 million under the Replacement DIP Facility ($17 million more than was authorized by the Replacement Interim DIP Order). During the Reporting Period, (i) the Debtor drew $7 million in additional DIP Obligations under the Replacement Final DIP Order, and (ii) FSI credit bid $250,000 of DIP Obligations in connection with the FSI Equipment Sale (as defined below).

Payment of Prepetition Claims Pursuant to First Day Orders

Pursuant to certain interim orders of the Court entered on or about June 24, 2026 and final orders of the Court entered on or about July 21, 2026 (the “First Day Orders”), the Debtor is authorized (but not directed) to pay, among other things, certain prepetition claims of employees and taxing authorities. Accordingly, these liabilities may have been or may be satisfied in accordance with such First Day Orders. To the extent any payments were made on account of prepetition claims following the Petition Date pursuant to the authority granted to the Debtor under the First Day Orders, such payments have been included in the MOR (subject to the notes and statements and limitations provided herein).

Reservation of Rights

The Debtor reserves all rights to amend or supplement the MOR in all respects, as may be necessary or appropriate. Nothing contained in the MOR shall constitute a waiver of any of the Debtor’s rights or an admission with respect to any claim against the Debtor or otherwise in connection with this chapter 11 case.

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Specific MOR Disclosures

Part 1: Cash Receipts and Disbursements

Pursuant to the DIP Orders, fees and expenses of estate professionals were placed into the Professional Fees Account (as defined in the DIP Orders) maintained by the Debtor. The transfer of such funds to the Professional Fee Account were treated as a transfer between Debtor accounts, and, therefore, were not treated as a distribution in Part 1(c). Professional fees will be treated as a disbursement in the reporting period in which they are paid to the applicable professionals.

Similarly, pursuant to the interim and final orders approving, among other things, the Debtor’s proposed form of adequate assurance of payment to utility companies [Docket Nos. 56 & 142] (the “Utilities Orders”), the Debtor deposited funds into the Utility Deposit Account (as defined in the Utilities Orders) prior to the Reporting Period. The Utility Deposit Account is a segregated account maintained by the Debtor. Accordingly, the funds in such account will be treated as disbursements only if they are ultimately paid to a third party.

Notes to Part 2: Asset and Liability Status

Unless otherwise noted, all asset and liability information included in the MOR reflects net book value, which may differ from current market value. As set forth above, this information has not been subjected to procedures that would typically be applied to financial information presented in accordance with U.S. GAAP or any other recognized financial reporting framework. If such procedures were applied, the Debtor believes that the financial information presented in the MOR could be subject to change, including material change. Asset and liability information includes intercompany claims and other assets and liabilities which may not be settled in cash.

The Debtor continues to pay postpetition invoices on account of postpetition goods provided and services rendered in the ordinary course of business.

Given the Petition Date did not occur at month end, certain prepetition and postpetition liability balances are estimated. The Debtor has sought to assign liabilities to the prepetition and postpetition periods based on the information available as of and at the time the MOR was prepared. As additional information becomes available, the allocation of liabilities between prepetition and postpetition periods may change. The Debtor reserves the right to amend the balances as it deems appropriate and any such amendments will be reflected in future MORs.

The amounts listed as “Prepetition Secured Debt,” “Prepetition Priority Debt” and “Prepetition Unsecured Debt” are preliminary and are subject to ongoing review and reconciliation by the Debtor. All amounts and classifications are subject to material adjustments.

Regarding Part 2c, the Debtor does not hold inventory; therefore, no inventory valuation method is applicable.

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Note to Part 3: Assets Sold or Transferred

On August 20, 2026, the Court entered: (i) an order [Docket No. 356] approving the sale (the “Surplus Equipment Sale”) of certain equipment and office furniture to Surplus Solutions, LLC for $2,300,000 plus certain other consideration, and (ii) an order [Docket No. 358] approving the sale (the “FSI Equipment Sale,” and together with the Surplus Equipment Sale, the “Equipment Sales”) of certain lab equipment to FSI for an offset of $250,000 against the DIP Obligations (as defined in the Replacement Final DIP Order) plus certain other consideration. Both equipment sales closed on or about August 20, 2026.

Notes to Part 5: Professional Fees and Expenses

All payments to professionals were authorized by the Court’s orders approving the retention of various professionals in this Chapter 11 Case. For the Reporting Period, such amounts represent: (i) fees paid to Kurtzman Carson Consultants, LLC dba Verita Global for services performed and expenses incurred in connection with its retention as claims and noticing agent (see Docket No. 55), and (ii) a monthly fee payable to Raymond James & Associates, Inc., which is payable each month without a prior fee application (see Docket No. 276).

Notes to Part 6: Postpetition Taxes

Regarding Part 6c and 6d, postpetition employer payroll taxes accrued and paid include both the employer and employee portions of payroll taxes.

Notes to Part 7: Questionnaire

Please see attached attestations regarding post-petition borrowing, payments on prepetition debt, and payments to insiders.

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UNITED STATES BANKRUPTCY COURT DISTRICT OF DELAWARE

The Debtor hereby submits this attestation regarding postpetition borrowing during the period of August 1, 2026 through August 31, 2026.

Pursuant to the Final Order (A) Authorizing the Debtor to Obtain Replacement Postpetition Financing, (B) Granting Liens and Providing Claims with Superpriority Administrative Expense Status, (C) Modifying Automatic Stay, (D) Scheduling Final Hearing, and (E) Granting Related Relief [Docket No. 360] (the “Replacement Final DIP Order”) during the reporting period: (i) the Debtor incurred $7 million in DIP Obligations under the Replacement DIP Facility (each as defined in the Replacement Final DIP Order), and (ii) FSI credit bid $250,000 of DIP Obligations in connection with the FSI Equipment Sale.

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UNITED STATES BANKRUPTCY COURT DISTRICT OF DELAWARE

All payments made by the Debtor during the Reporting Period (and included in the disbursements reported in this MOR) were authorized under various final orders granted by the Court, which authorized the Debtor’s various motions that were filed following the commencement of the chapter 11 case.

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UNITED STATES BANKRUPTCY COURT DISTRICT OF DELAWARE

The Debtor hereby submits this attestation regarding payments to insiders during the period of August 1, 2026 through August 31, 2026.

With respect to insiders, all cash payments made were on account of ordinary course salaries and authorized travel and expense reimbursements.

On July 31, 2026, the Court entered an order [Docket No. 216], among other things, authorizing the Debtor to implement a key employee retention program and a key employee incentive program (the “KEIP/KERP Programs”). No payments were made under the KEIP/KERP Programs to insiders or otherwise during the Reporting Period.

As set forth in the Debtor’s motion seeking authority to pay prepetition employee obligations [Docket No. 9], the Debtor maintained certain equity-based compensation programs prior to the Petition Date. Pursuant to such programs, certain employees, including certain executives that may be insiders, were awarded restricted stock units (the “RSUs”) prior to the Petition Date. During the Reporting Period, 213,628 RSUs awarded to 74 individuals prior to the Petition Date vested. For the avoidance of doubt, the Debtor stopped awarding RSUs prior to the Petition Date and no RSUs or any other form of equity-based compensation have been awarded since the Petition Date.

No other non-cash transfers were made during this reporting period.

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UNITED STATES BANKRUPTCY COURT DISTRICT OF DELAWARE

The Debtor hereby submits this attestation regarding bank account reconciliations in lieu of providing copies of bank statements, bank reconciliations, and journal entries.

The Debtor’s standard practice is to ensure that bank reconciliations are completed as part of the month end close each reporting period. I attest that each of the Debtor’s bank accounts has been reconciled in accordance with its standard practices.

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UNITED STATES BANKRUPTCY COURT DISTRICT OF DELAWARE

The Debtor hereby submits this attestation regarding assets sold or transferred during the period of August 1, 2026 through August 31, 2026.

On August 20, 2026, the Court entered: (i) an order [Docket No. 356] approving the sale (the “Surplus Equipment Sale”) of certain equipment and office furniture to Surplus Solutions, LLC for $2,300,000 plus certain other consideration, and (ii) an order [Docket No. 358] approving the sale (the “FSI Equipment Sale,” and together with the Surplus Equipment Sales, the “Equipment Sales”) of certain lab equipment to FSI for an offset of $250,000 against the DIP Obligations (as defined in the Replacement Final DIP Order) plus certain other consideration. Both equipment sales closed on or about August 20, 2026.

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Sangamo Therapeutics Inc.

MOR #3 - Statement of cash receipts and disbursements

$ in 000s

1 of 4

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Sangamo Therapeutics Inc.

MOR #3 - Balance sheet

$ in 000s

Notes:

2 of 4

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Sangamo Therapeutics Inc.

MOR #3 - Statement of operations (profit or loss statement)

$ in 000s