Long term debt as of March 31, 2023 and September 30, 2022 is detailed in the table below.

As of March 31, 2023 and September 30, 2022, the Company had a $0 and $15,000 outstanding balance on the revolving credit facility. Refer to the statements of cash flows for information related to borrowings and paydowns of the revolving credit facility during the six months ended March 31, 2023.

On October 12, 2022, the Company drew its $35,000 delayed draw term loan (the “Additional DDTL”) allowed under the First Amendment to the Credit Agreement (“First Amendment”). A portion of the proceeds were used to repay the $15,000 balance on the Company’s revolving credit facility, while the remaining was drawn to fund a portion of the Company’s capital expenditures in fiscal year 2022 and those planned for fiscal year 2023.

On December 29, 2022 and January 9, 2023, the Company, the lenders party thereto, and Jefferies Finance LLC, as administrative agent (the “Agent”), entered into the Second and Third Amendments, respectively, to the Credit Agreement. Refer below for further information related to those amendments.

On November 5, 2021, the Company, certain subsidiaries of the Company (the “Subsidiary Guarantors”), the lenders party thereto, and the Agent, entered into a Credit Agreement (the “Credit Agreement”). The Credit Agreement provides for a term loan facility in the original principal amount of $165,000, a delayed draw term loan facility in the original principal amount of $35,000 (available to be drawn up to 18 months from the date of the Credit Agreement) (the “Initial DDTL” and together with the Additional DDTL, the “DDTL”) and a revolving credit facility in the original principal amount of $15,000. On November 5, 2021, the Company borrowed the full amount of the term loan facility, but did not borrow any amounts on the delayed draw term loan facility or the revolving credit facility.

The Company may elect to borrow on each of the loan facilities at either an adjusted LIBOR rate of interest or an adjusted prime rate of interest. Adjusted LIBOR rate loans shall accrue interest at an annual rate equal to the LIBOR rate plus a margin of between 6.00% and 6.50%, depending on the Company’s then current Secured Leverage Ratio (as defined in the Credit Agreement). The LIBOR rate must be a minimum of 1.00%. The initial adjusted LIBOR rate of interest is the LIBOR rate plus 6.25%. Adjusted prime rate loans shall accrue interest at an annual rate equal to the prime rate plus a margin of between 5.00% and 5.50%, depending on the Company’s then current Secured Leverage Ratio. The initial adjusted prime rate of interest is the prime rate plus 5.25%. For the term loan facility, interest expense was accrued at an effective rate of 10.40% and 10.32% for the three and six months ended March 31, 2023, respectively.

The Company must pay (i) a fee based on a percentage per annum equal to 0.50% on the average daily undrawn portion of the commitments in respect of the revolving credit facility and (ii) a fee based on a percentage per annum equal to 1.00% on the average

daily undrawn portion of the commitments in respect of the delayed draw loan facility. In each case, such fee shall be paid quarterly in arrears.

Each of the term loan facility and delayed draw term loan facility require annual principal payments in an amount equal to 1.00% of their respective original principal amounts. The Company shall also repay the term loan facility on an annual basis in an amount equal to a percentage of its Excess Cash Flow (as defined in the Credit Agreement), which percentage will be determined by its then current Secured Leverage Ratio. Each of the loan facilities may be repaid at any time. Voluntary prepayments will be subject to a 1% prepayment premium if made on or prior to November 5, 2023 and other breakage penalties, as defined in the Credit Agreement. Voluntary prepayments made after November 5, 2023 are not subject to 1% prepayment premium.

The Company is required to maintain an initial Secured Leverage Ratio of not more than 4.25 to 1.00. The maximum permitted Secured Leverage Ratio shall reduce to 3.75 to 1.00 beginning with the Company’s fiscal quarter ending September 30, 2023 and to 3.00 to 1.00 beginning with the Company’s fiscal quarter ending March 31, 2025. The Company is required to maintain a minimum Fixed Charge Coverage Ratio (as defined in the Credit Agreement), which ratio shall be 1.00 to 1.00 during the first year of the Credit Agreement and shall be 1.10 to 1.00 from and after the Credit Agreement’s first anniversary.

Each of the loan facilities is secured by all assets (other than certain excluded assets) of the Company and each of the Subsidiary Guarantors. Repayment of each of the loan facilities is guaranteed by each of the Subsidiary Guarantors.

Utilizing proceeds from the Credit Agreement on November 5, 2021, the Company repaid all indebtedness and terminated the credit agreement related to the First Internet Bank of Indiana (“FIB”) credit facility and recognized an $877 loss on debt extinguishment during the six months ended March 31, 2022.

On January 7, 2022, the Company drew $35,000 on the Initial DDTL. Amounts outstanding under the Initial DDTL accrue interest at an annual rate equal to the LIBOR rate plus a margin of between 6.00% and 6.50%, depending on the Company’s then current Secured Leverage Ratio (as defined in the Credit Agreement). The initial adjusted LIBOR rate of interest is the LIBOR rate plus 6.25%. For the Initial DDTL, interest expense was accrued at an effective rate of 10.45% and 10.35% for the three and six months ended March 31, 2023, respectively.

On January 27, 2022, the Company, Subsidiary Guarantors, the lenders party thereto, and the Agent entered into the First Amendment to the existing Credit Agreement. The First Amendment provides for, among other things, an increase to the existing term loan facility in the amount of $40,000 (the “Incremental Term Loans”) and the Additional DDTL in the original principal amount of $35,000, which amount is available to be drawn up to 24 months from the date of the First Amendment. The Incremental Term Loans and any amounts borrowed under the Additional DDTL are referred to herein as the “Additional Term Loans”. On January 27, 2022, the Company borrowed the full amount of the Incremental Term Loans, and on October 12, 2022, the Company borrowed the full $35,000 under the Additional DDTL.

Amounts outstanding under the Additional Term Loans will accrue interest at an annual rate equal to the LIBOR rate plus a margin of between 6.00% and 6.50%, depending on the Company’s then current Secured Leverage Ratio (as defined in the Credit Agreement). The initial adjusted LIBOR rate of interest is the LIBOR rate plus 6.25%. For the Additional DDTL, interest expense was accrued at an effective rate of 10.68% and 11.07% for the three and six months ended March 31, 2023, respectively.

The Additional Term Loans require annual principal payments in an amount equal to 1.0% of the original principal amount. Voluntary prepayments of the Additional Term Loans will be subject to a 1% prepayment premium if made on or prior to November 5, 2023 and other breakage penalties, as defined in the Credit Agreement. Voluntary prepayments made after November 5, 2023 are not subject to 1% prepayment premium.

The Company shall also repay the term loans on an annual basis in an amount equal to a percentage of its Excess Cash Flow (as defined in the Credit Agreement), which percentage will be determined by its then current Secured Leverage Ratio.

The Additional Term Loans are secured by all assets (other than certain excluded assets) of the Company and each of the Subsidiary Guarantors. Repayment of the Additional Term Loans is guaranteed by each of the Subsidiary Guarantors.

On December 29, 2022, the Company, the Subsidiary Guarantors, the lenders party thereto, and the Agent, entered into a Second Amendment (the “Second Amendment”) to the Credit Agreement.

The Second Amendment provides for, among other things, an extension of the deadline for the Company to provide to the lenders the audited financial statements for the Company’s fiscal year ended September 30, 2022 and an annual budget for 2023; the Company satisfied these requirements by the extended deadline. The Second Amendment adds a requirement that the Company provide, within 30 days after the end of each month, an unaudited consolidated balance sheet, statement of income and statement of cash flows as of the end of, and for, such month, as well as a “key performance indicator” report. The Second Amendment also requires that, within 10 business days after the end of each month, the Company will provide a rolling 13-week cash flow forecast prepared on a monthly basis. The Second Amendment further provides that, upon the request of the Required Lenders (as defined in the Credit Agreement), the Company will permit a financial advisor designated by the Required Lenders to meet with management of the Company to discuss the affairs, finances, accounts and condition of the Company during the six-month period following the effective date of the Second Amendment. In addition, the Second Amendment requires the Company to deliver an updated organization chart and certain supplemental information regarding the Company’s subsidiaries in connection with each quarterly report required pursuant to the Credit Agreement.

Under the Second Amendment, the Company may elect to borrow on each of the loan facilities at either an adjusted term secured overnight financing rate (“Term SOFR”) rate of interest or an alternate base rate of interest. Adjusted Term SOFR loans shall accrue interest at an annual rate equal to the applicable Term SOFR rate plus (i) an adjustment percentage equal to between 0.11448% and 0.42826%, depending on the term of the loan (“Adjusted Term SOFR”); provided that, Adjusted Term SOFR shall never be less than 1.00%, and (ii) a margin of between 6.00% and 6.50%, depending on the Company’s then current Secured Leverage Ratio (as defined in the Credit Agreement). Alternate base rate loans shall accrue interest at an annual rate equal to (i) the highest of (a) the Federal Funds Effective Rate (as defined in the Credit Agreement) plus 0.5%, (b) the Agent’s prime rate and (c) Adjusted Term SOFR for a one-month tenor plus 1.00% (the “Alternate Base Rate”); provided that, the Alternate Base Rate shall never be less than 2.00%, plus (ii) a margin of between 5.00% and 5.50%, depending on the Company’s then current Secured Leverage Ratio.

The Second Amendment also provides that the Company may not request any credit extensions under the revolving credit facility under the Credit Agreement, if any of the conditions precedent set forth in Section 4.02 of the Credit Agreement cannot be satisfied, including, without limitation, the making of the representation and warranty that as of the date of the most recent audited financial statements delivered to the Agent, no event, change, circumstance, condition, development or occurrence has had, or would reasonably be expected to result in, either individually or in the aggregate, a Material Adverse Effect (as defined in the Credit Agreement).

In addition, the Second Amendment provides that, no later than January 13, 2023 (or such later date as the Required Lenders shall agree in their discretion), the Company shall (i) appoint a financial advisor on terms reasonably acceptable to the Required Lenders and the Company for a term of at least six months, (ii) provide a 13-week budget to the Agent, and (iii) deliver a perfection certificate supplement updating certain information previously provided with respect to each of the Company and the Subsidiary Guarantors, including information regarding certain collateral and other assets owned by such parties. The Company has timely satisfied each of these requirements.

On January 9, 2023, the Company, the Subsidiary Guarantors, the lenders party thereto, and the Agent, entered into a Third Amendment (“Third Amendment”) to the Credit Agreement. The Third Amendment provides that, among other things, during the period beginning on January 9, 2023 and, subject to the terms of the Credit Agreement, ending on the date on which financial statements for the Company’s fiscal quarter ending March 31, 2024 are delivered or are required to be delivered, as long as no event of default has occurred (the “Amendment Relief Period”):

The Third Amendment provides that from and after the date thereof, no incremental facilities under the Credit Agreement may be established or incurred. The Third Amendment also provides for additional mandatory prepayments of borrowed amounts following the receipt by the Company of certain cash receipts, including proceeds from certain equity issuances and cash received by the Company not in the ordinary course of business. Under the Third Amendment, after any draw on the revolving credit facility, the Company’s cash and cash equivalents held on hand domestically within the U.S. cannot exceed $10,000.

Under the Third Amendment, the Company may elect to borrow on each of the loan facilities accruing interest at either an adjusted secured overnight financing rate (“Term SOFR”) or an alternate base rate of interest. SOFR loans shall accrue interest at an annual rate equal to the applicable Term SOFR rate plus (i) an adjustment percentage equal to between 0.11448% and 0.42826%, depending on the term of the loan (“Adjusted Term SOFR”), provided that, the Adjusted Term SOFR shall never be less than 1.00% per annum, plus (ii) an applicable margin of 6.75% per annum for term loans maintained as SOFR loans or 9.50% per annum for revolving loans maintained as SOFR loans. Alternate base rate loans shall accrue interest at an annual rate equal to (i) the highest of (a) the Federal Funds Effective Rate (as defined in the Credit Agreement) plus 0.50%, (b) the Agent’s prime rate and (c) Adjusted Term SOFR for a one-month tenor plus 1.00% (the “Alternate Base Rate”), provided that, the Alternate Base Rate is subject to a floor of 2.00% per annum plus (ii) an applicable margin of 5.75% per annum for term loans maintained as Alternate Base Rate loans or 8.50% per annum for revolving loans maintained as Alternate Base Rate loans.

The fee consideration payable by the Company for each consenting lender party to the Third Amendment is: (i) 0.50% of the aggregate outstanding principal amount of the term loans held by each consenting term loan lender, to be paid in-kind and capitalized to the principal amounts of the term loans held by such lender; (ii) 0.50% of the aggregate outstanding principal amount of the term loans held by each consenting term loan lender, to be paid in cash upon the occurrence of certain prepayments of the term loan under the Credit Agreement; and (iii) 7.00% of the aggregate amount of the revolving commitments held by each consenting revolving lender, to be paid in cash upon the occurrence with certain permanent reductions of the revolving loans under the Credit Agreement

Acquisition-related Debt (Seller Notes)

In addition to the indebtedness under the Credit Agreement, certain of the Company’s subsidiaries have issued unsecured notes as partial payment of the purchase prices of certain acquisitions as described herein. Each of these notes is subordinated to the indebtedness under the Credit Agreement.

As part of the acquisition of Plato, which is a part of the Company’s Inotiv Boulder subsidiary, Inotiv Boulder, LLC, the Company issued unsecured subordinated promissory notes payable to the former shareholders of Plato in an aggregate principal amount of $3,000. The promissory notes bear interest at a rate of 4.5% per annum, with monthly payments of principal and interest and a maturity date of June 1, 2023.

As part of the acquisition of OBRC, the Company agreed to leave in place a payable owed by OBRC to the Seller in the amount of $3,700, which the Company determined to have a fair value of $3,325 as of January 27, 2022. The payable does not bear interest and was originally required to be paid to the Seller on the date that is 18 months after the closing date of January 27, 2022. The Company has the right to set off against the payable any amounts that become payable by the Seller on account of indemnification obligations under the purchase agreement. On April 4, 2023, the Company and the Seller entered into a First Amendment to extend the maturity date of the payable to July 27, 2024. Since, prior to March 31, 2023, management intended to extend the maturity date, the payable is presented as a long-term liability as of March 31, 2023, reflecting the amended maturity date.

As part of the acquisition of Histion, which is a part of the Company’s subsidiary, Bronco Research Services, LLC, the Company issued unsecured subordinated promissory notes payable to the former shareholders of Histion in an aggregate principal amount of $433. The promissory notes bear interest at a rate of 4.5% per annum, with monthly payments of principal and interest and a maturity date of April 1, 2025.

As part of the acquisition of Protypia, the Company issued unsecured subordinated promissory notes payable to the former shareholders of Protypia in an aggregate principal amount of $600. The promissory notes bear interest at a rate of 4.5% per annum, with monthly payments of principal and interest and a maturity date of January 7, 2024.

Convertible Senior Notes

On September 27, 2021, the Company issued $140,000 principal amount of its 3.25% Convertible Senior Notes due 2027 (the “Notes”). The Notes were issued pursuant to, and are governed by, an indenture, dated as of September 27, 2021, among the Company, the Company’s wholly-owned subsidiary, BAS Evansville, Inc., as guarantor (the “Guarantor”), and U.S. Bank National Association, as trustee (the “Indenture”). Pursuant to the purchase agreement between the Company and the initial purchaser of the Notes, the Company granted the initial purchaser an option to purchase, for settlement within a period of 13 days from, and including, the date the Notes were first issued, up to an additional $15,000 principal amount of the Notes. The Notes issued on September 27, 2021 included $15,000 principal amount of the Notes issued pursuant to the full exercise by the initial purchaser of such option. The Company used the net proceeds from the offering of the Notes, together with borrowings under a new senior secured term loan facility, to fund the cash portion of the purchase price of the Envigo acquisition and related fees and expenses.

The Notes are the Company’s senior, unsecured obligations and are (i) equal in right of payment with the Company’s existing and future senior, unsecured indebtedness; (ii) senior in right of payment to the Company’s existing and future indebtedness that is expressly subordinated to the Notes; (iii) effectively subordinated to the Company’s existing and future secured indebtedness, to the extent of the value of the collateral securing that indebtedness; and (iv) structurally subordinated to all existing and future indebtedness and other liabilities, including trade payables, and (to the extent the Company is not a holder thereof) preferred equity, if any, of the Company’s non-guarantor subsidiaries. The Notes are fully and unconditionally guaranteed, on a senior, unsecured basis, by the Guarantor.

The Notes accrue interest at a rate of 3.25% per annum, payable semi-annually in arrears on April 15 and October 15 of each year, beginning on April 15, 2022. The Notes will mature on October 15, 2027, unless earlier repurchased, redeemed or converted. Before April 15, 2027, noteholders have the right to convert their Notes only upon the occurrence of certain events. From and after April 15, 2027, noteholders may convert their Notes at any time at their election until the close of business on the scheduled trading day immediately before the maturity date. The Company will settle conversions by paying or delivering, as applicable, cash, its common shares or a combination of cash and its common shares, at the Company’s election. The initial conversion rate is 21.7162 common shares per $1 principal amount of Notes, which represents an initial conversion price of approximately $46.05 per common share. The conversion rate and conversion price are subject to customary adjustments upon the occurrence of certain events. In addition, if certain corporate events that constitute a “Make-Whole Fundamental Change” (as defined in the Indenture) occur, then the conversion rate will, in certain circumstances, be increased for a specified period of time.

As of March 31, 2023 and September 30, 2022, there were $4,620 and $5,060, respectively, in unamortized debt issuance costs related to the Notes. For the three months ended March 31, 2023, the total interest expense was $2,740, including coupon interest expense of $1,138, accretion expense of $1,383, and the amortization of debt discount and issuance costs of $219. During the three months ended March 31, 2022, the total interest expense was $2,603, including coupon interest expense of $1,138, accretion expense of $1,257, and the amortization of debt discount and issuance costs of $208. For the six months ended March 31, 2023, the total interest expense was $5,504, including coupon interest expense of $2,300, accretion expense of $2,764, and the amortization of debt discount and issuance costs of $440. During the six months ended March 31, 2022, the total interest expense was $5,230, including coupon interest expense of $2,300, accretion expense of $2,512, and the amortization of debt discount and issuance costs of $418.

The Notes are redeemable, in whole and not in part, at the Company’s option at any time on or after October 15, 2024 and on or before the 40th scheduled trading day immediately before the maturity date, but only if the last reported sale price per common share of the Company exceeds 130% of the conversion price on (i) each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the trading day immediately before the date the Company sends the related redemption notice; and (ii) the trading day immediately before the date the Company sends such notice. The redemption price is a cash amount equal to the principal amount of the Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. In addition, calling the Notes for redemption pursuant to the provisions described in this paragraph will constitute a Make-Whole Fundamental Change, which will result in an increase to the conversion rate in certain circumstances for a specified period of time.

If certain corporate events that constitute a “Fundamental Change” (as defined in the Indenture) occur, then noteholders may require the Company to repurchase their Notes at a cash repurchase price equal to the principal amount of the Notes to be repurchased, plus accrued and unpaid interest, if any, to, but excluding, the Fundamental Change repurchase date. The definition of Fundamental Change includes certain business combination transactions involving the Company and certain de-listing events with respect to the Company’s common shares.

The Notes have customary provisions relating to the occurrence of “Events of Default” (as defined in the Indenture), which include the following: (i) certain payment defaults on the Notes (which, in the case of a default in the payment of interest on the Notes,

are subject to a 30-day cure period); (ii) the Company’s failure to send certain notices under the Indenture within specified periods of time; (iii) the failure by the Company or the Guarantor to comply with certain covenants in the Indenture relating to the ability of the Company or the Guarantor to consolidate with or merge with or into, or sell, lease or otherwise transfer, in one transaction or a series of transactions, all or substantially all of the assets of the Company or the Guarantor, as applicable, and its subsidiaries, taken as a whole, to another person; (iv) a default by the Company or the Guarantor in its other obligations or agreements under the Indenture or the Notes if such default is not cured or waived within 60 days after notice is given in accordance with the Indenture; (v) certain defaults by the Company, the Guarantor or any of their respective subsidiaries with respect to indebtedness for borrowed money of at least $20,000; (vi) the rendering of certain judgments against the Company, the Guarantor or any of their respective subsidiaries for the payment of at least $20,000, where such judgments are not discharged or stayed within 60 days after the date on which the right to appeal has expired or on which all rights to appeal have been extinguished; (vii) certain events of bankruptcy, insolvency and reorganization involving the Company, the Guarantor or any of their respective significant subsidiaries; and (viii) the guarantee of the Notes ceases to be in full force and effect (except as permitted by the Indenture) or the Guarantor denies or disaffirms its obligations under its guarantee of the Notes.

If an Event of Default involving bankruptcy, insolvency or reorganization events with respect to the Company or the Guarantor (and not solely with respect to a significant subsidiary of the Company or the Guarantor) occurs, then the principal amount of, and all accrued and unpaid interest on, all of the Notes then outstanding will immediately become due and payable without any further action or notice by any person. If any other Event of Default occurs and is continuing, then the trustee, by notice to the Company, or noteholders of at least 25% of the aggregate principal amount of Notes then outstanding, by notice to the Company and the trustee, may declare the principal amount of, and all accrued and unpaid interest on, all of the Notes then outstanding to become due and payable immediately. However, notwithstanding the foregoing, the Company may elect, at its option, that the sole remedy for an Event of Default relating to certain failures by the Company to comply with certain reporting covenants in the Indenture consists exclusively of the right of the noteholders to receive special interest on the Notes for up to 180 days at a specified rate per annum not exceeding 0.50% on the principal amount of the Notes.

In accordance with ASC 815, at issuance, the Company evaluated the convertible feature of the Notes and determined it was required to be bifurcated as an embedded derivative and did not qualify for equity classification. The convertible feature of the Notes is subject to fair value remeasurement as of each balance sheet date or until it meets equity classification requirements and is valued utilizing Level 3 inputs as described below. The discount resulting from the initial fair value of the embedded derivative will be amortized to interest expense using the effective interest method. Non-cash interest expense during the period primarily related to this discount.

In the first quarter of 2022, the Company adopted Accounting Standards Update (“ASU”) ASU 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40) (“ASU 2020-06”). The update simplifies the accounting for convertible debt instruments and convertible preferred shares by reducing the number of accounting models and limiting the number of embedded conversion features separately recognized from the primary contract. As a result of the approval of the increase in authorized shares on November 4, 2021 (see Note 12 – Equity, Stock-Based Compensation and Loss Per Share), the Note conversion rights met all equity classification criteria in ASC 815. As a result, the derivative liability was remeasured as of November 4, 2021 and reclassified out of long-term liabilities and into additional paid-in capital.

Based upon the above, the Company remeasured the fair value of the embedded derivative as of November 4, 2021, which resulted in a fair value measurement of $88,576 and a loss on remeasurement included in other income (loss) for the six months ended March 31, 2022 of $56,714.