GLAUKOS (GKOS) Quarterly Cash Flow Statement

Cash Flow Summary

GLAUKOS (GKOS) quarterly cash flow statement covering the six quarters from June 2024 to September 2025, as reported to the SEC.

GLAUKOS used $10.09M of cash in operations in the quarter ended September 30, 2025, a bigger loss than the $9.59M a year earlier.
After spending $1.64M on purchases of property and equipment, free cash flow was -$11.72M.
Investing activities used $3.99M and financing activities provided $5.26M. Overall, cash went down $2.57M.

A cash flow statement shows the cash that actually came in and went out, split between running the business, investing and financing.

Figures in USD thousands

						Sep'25	Jun'25	Mar'25	Dec'24	Sep'24	Jun'24
Operating Activities
Net loss
-16,231	-19,657	-18,146	-33,580	-21,409	-50,545	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net loss						-16,231	-19,657	-18,146	-33,580	-21,409	-50,545	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation
2,777	2,725	2,651	2,768	2,743	2,753	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Depreciation						2,777	2,725	2,651	2,768	2,743	2,753	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Depreciation
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Depreciation						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of intangible assets
6,356	5,844	5,576	5,972	6,256	6,245	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of intangible assets						6,356	5,844	5,576	5,972	6,256	6,245	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of right-of-use lease assets
1,055	1,055	1,078	1,078	1,062	1,061	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of right-of-use lease assets						1,055	1,055	1,078	1,078	1,062	1,061	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of debt issuance costs
-	-	-	56	67	252	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of debt issuance costs						-	-	-	56	67	252	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of lease right-of-use lease assets
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of lease right-of-use lease assets						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of premium on short-term investments
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of premium on short-term investments						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of debt discount
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of debt discount						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deferred income tax benefit
11	-8	-10	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deferred income tax benefit						11	-8	-10	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Loss on disposal of fixed assets
-20	-5	-6	-534	-	-54	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Loss on disposal of fixed assets						-20	-5	-6	-534	-	-54	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Stock-based compensation
14,913	18,019	12,986	13,309	14,420	11,313	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Stock-based compensation						14,913	18,019	12,986	13,309	14,420	11,313	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Change in fair value of cash settled stock options
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Change in fair value of cash settled stock options						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Change in fair value of stock warrant liability
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Change in fair value of stock warrant liability						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Unrealized foreign currency (gain) loss
6,150	-2,486	-1,397	-4,130	2,421	-1,455	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Unrealized foreign currency (gain) loss						6,150	-2,486	-1,397	-4,130	2,421	-1,455	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of premium on short-term investments
-498	-1,050	-1,149	-858	-962	-1,114	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of premium on short-term investments						-498	-1,050	-1,149	-858	-962	-1,114	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other liabilities
313	1,906	-1,091	312	1,398	970	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other liabilities						313	1,906	-1,091	312	1,398	970	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Acquired in-process R&D acquired through the issuance of common stock
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Acquired in-process R&D acquired through the issuance of common stock						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Allowance for doubtful accounts
3,002	2,700	1,367	-	-	-248	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Allowance for doubtful accounts						3,002	2,700	1,367	-	-	-248	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deferred rent and other liabilities
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deferred rent and other liabilities						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Changes in operating assets and liabilities:
Accounts receivable
18,792	11,668	12,316	5,490	4,496	4,660	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Accounts receivable						18,792	11,668	12,316	5,490	4,496	4,660	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Inventory
-659	2,731	1,668	627	3,056	6,554	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Inventory						-659	2,731	1,668	627	3,056	6,554	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Prepaid expenses and other current assets
-4,852	1,420	-2,339	3,652	-3,971	4,565	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Prepaid expenses and other current assets						-4,852	1,420	-2,339	3,652	-3,971	4,565	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Accounts payable and accrued liabilities
7,799	6,616	-6,729	4,427	565	-1,351	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Accounts payable and accrued liabilities						7,799	6,616	-6,729	4,427	565	-1,351	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deposits and other assets
472	683	134	67	-183	-25	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deposits and other assets						472	683	134	67	-183	-25	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash used in operating activities
-10,090	6,979	-18,521	525	-9,586	-18,369	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash used in operating activities						-10,090	6,979	-18,521	525	-9,586	-18,369	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Investing activities
Purchases of short-term investments
75,366	42,022	74,743	66,864	32,002	41,839	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Purchases of short-term investments						75,366	42,022	74,743	66,864	32,002	41,839	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from sales and maturities of short-term investments
74,543	53,533	40,878	80,308	65,161	79,850	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from sales and maturities of short-term investments						74,543	53,533	40,878	80,308	65,161	79,850	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Purchases of property and equipment
1,635	1,179	1,938	1,733	1,450	2,149	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Purchases of property and equipment						1,635	1,179	1,938	1,733	1,450	2,149	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from disposal of property and equipment
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from disposal of property and equipment						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Investment in company-owned life insurance
1,535	2,070	395	-76	1,146	1,036	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Investment in company-owned life insurance						1,535	2,070	395	-76	1,146	1,036	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other investing activities
-	-	-750	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other investing activities						-	-	-750	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash (used in) provided by investing activities
-3,993	-20,782	-36,948	11,787	30,563	34,864	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash (used in) provided by investing activities						-3,993	-20,782	-36,948	11,787	30,563	34,864	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from exercise of stock options
1,483	4,972	4,082	9,838	5,509	10,945	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from exercise of stock options						1,483	4,972	4,082	9,838	5,509	10,945	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from share purchases under Employee Stock Purchase Plan
4,725	-	2,961	-	4,729	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from share purchases under Employee Stock Purchase Plan						4,725	-	2,961	-	4,729	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Payment of employee taxes related to vested restricted stock units
649	2,449	4,845	1,730	328	2,127	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Payment of employee taxes related to vested restricted stock units						649	2,449	4,845	1,730	328	2,127	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from tenant improvement allowance
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from tenant improvement allowance						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Principal paid on finance lease
295	278	248	212	242	226	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Principal paid on finance lease						295	278	248	212	242	226	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from senior secured term and draw-to term loans
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from senior secured term and draw-to term loans						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Payments of line of credit
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Payments of line of credit						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Payments of subordinated notes
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Payments of subordinated notes						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from exercise of stock warrants
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from exercise of stock warrants						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash provided by financing activities
5,264	2,245	1,950	60,113	9,668	8,592	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash provided by financing activities						5,264	2,245	1,950	60,113	9,668	8,592	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Effect of exchange rate changes on cash and cash equivalents
6,252	-2,780	-1,855	-2,924	1,423	-630	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Effect of exchange rate changes on cash and cash equivalents						6,252	-2,780	-1,855	-2,924	1,423	-630	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Effect of exchange rate changes on cash and cash equivalents
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Effect of exchange rate changes on cash and cash equivalents						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net (decrease) increase in cash, cash equivalents and restricted cash
-2,567	-14,338	-55,374	69,483	32,068	24,457	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net (decrease) increase in cash, cash equivalents and restricted cash						-2,567	-14,338	-55,374	69,483	32,068	24,457	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Reduction of liability upon vesting of stock options previously exercised for unvested stock
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Reduction of liability upon vesting of stock options previously exercised for unvested stock						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Supplemental disclosures of cash flow information
Taxes paid, net of refunds
173	235	276	195	364	450	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Taxes paid, net of refunds						173	235	276	195	364	450	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other interest paid
1,049	1,057	1,058	1,073	1,077	1,243	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other interest paid						1,049	1,057	1,058	1,073	1,077	1,243	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Supplemental schedule of noncash investing and financing activities
Purchases of property and equipment included in accounts payable and accrued liabilities
248	88	502	795	-398	-1,063	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Purchases of property and equipment included in accounts payable and accrued liabilities						248	88	502	795	-398	-1,063	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx