GLAUKOS (GKOS) Trailing 12-Month Cash Flow Statement

Cash Flow Summary

GLAUKOS (GKOS) trailing twelve month cash flow statement covering six trailing twelve month periods to September 30, 2025, as reported to the SEC.

GLAUKOS used $21.11M of cash in operations in the twelve months ended September 30, 2025, a smaller loss than the $72.49M a year earlier.
After spending $6.49M on purchases of property and equipment, free cash flow was -$27.59M.
Investing activities used $49.94M and financing activities provided $69.57M. Overall, cash went down $2.8M.

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
-87,614	-92,792	-123,680	-146,372	-149,571	-158,606	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net loss						-87,614	-92,792	-123,680	-146,372	-149,571	-158,606	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation
10,921	10,887	10,915	10,949	10,468	9,951	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Depreciation						10,921	10,887	10,915	10,949	10,468	9,951	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
23,748	23,648	24,049	24,701	24,957	24,929	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of intangible assets						23,748	23,648	24,049	24,701	24,957	24,929	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of right-of-use lease assets
4,266	4,273	4,279	4,272	4,300	4,275	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of right-of-use lease assets						4,266	4,273	4,279	4,272	4,300	4,275	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of debt issuance costs
-	-	-	718	1,005	1,281	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of debt issuance costs						-	-	-	718	1,005	1,281	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
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deferred income tax benefit						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Loss on disposal of fixed assets
-565	-545	-594	-598	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Loss on disposal of fixed assets						-565	-545	-594	-598	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Stock-based compensation
59,227	58,734	52,028	50,207	49,885	45,949	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Stock-based compensation						59,227	58,734	52,028	50,207	49,885	45,949	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
-1,863	-5,592	-4,561	-4,620	1,481	-1,834	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Unrealized foreign currency (gain) loss						-1,863	-5,592	-4,561	-4,620	1,481	-1,834	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of premium on short-term investments
-3,555	-4,019	-4,083	-4,045	-3,831	-3,568	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Amortization of premium on short-term investments						-3,555	-4,019	-4,083	-4,045	-3,831	-3,568	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other liabilities
1,440	2,525	1,589	5,206	5,712	4,192	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other liabilities						1,440	2,525	1,589	5,206	5,712	4,192	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Acquired in-process R&D acquired through the issuance of common stock
-	-	-	5,000	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Acquired in-process R&D acquired through the issuance of common stock						-	-	-	5,000	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Allowance for doubtful accounts
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Allowance for doubtful accounts						-	-	-	-	-	-	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
48,266	33,970	26,962	21,966	16,784	12,723	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Accounts receivable						48,266	33,970	26,962	21,966	16,784	12,723	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Inventory
4,367	8,082	11,905	18,788	20,088	17,652	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Inventory						4,367	8,082	11,905	18,788	20,088	17,652	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Prepaid expenses and other current assets
-2,119	-1,238	1,907	3,334	1,152	4,236	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Prepaid expenses and other current assets						-2,119	-1,238	1,907	3,334	1,152	4,236	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Accounts payable and accrued liabilities
12,113	4,879	-3,088	21	3,048	5,859	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Accounts payable and accrued liabilities						12,113	4,879	-3,088	21	3,048	5,859	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deposits and other assets
1,356	701	-7	2,075	3,644	4,248	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Deposits and other assets						1,356	701	-7	2,075	3,644	4,248	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash used in operating activities
-21,107	-20,603	-45,951	-61,300	-72,490	-71,072	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash used in operating activities						-21,107	-20,603	-45,951	-61,300	-72,490	-71,072	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Investing activities
Purchases of short-term investments
258,995	215,631	215,448	189,955	195,140	186,606	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Purchases of short-term investments						258,995	215,631	215,448	189,955	195,140	186,606	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from sales and maturities of short-term investments
249,262	239,880	266,197	247,199	231,256	207,917	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from sales and maturities of short-term investments						249,262	239,880	266,197	247,199	231,256	207,917	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Purchases of property and equipment
6,485	6,300	7,270	6,300	8,781	10,691	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Purchases of property and equipment						6,485	6,300	7,270	6,300	8,781	10,691	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
3,924	3,535	2,501	3,151	4,250	3,201	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Investment in company-owned life insurance						3,924	3,535	2,501	3,151	4,250	3,201	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other investing activities
-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other investing activities						-	-	-	-	-	-	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash (used in) provided by investing activities
-49,936	-15,380	40,266	47,831	23,123	7,457	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash (used in) provided by investing activities						-49,936	-15,380	40,266	47,831	23,123	7,457	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from exercise of stock options
20,375	24,401	30,374	39,347	35,633	34,434	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from exercise of stock options						20,375	24,401	30,374	39,347	35,633	34,434	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from share purchases under Employee Stock Purchase Plan
7,686	7,690	7,690	7,416	7,416	6,802	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Proceeds from share purchases under Employee Stock Purchase Plan						7,686	7,690	7,690	7,416	7,416	6,802	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Payment of employee taxes related to vested restricted stock units
9,673	9,352	9,030	6,563	3,460	3,900	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Payment of employee taxes related to vested restricted stock units						9,673	9,352	9,030	6,563	3,460	3,900	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
1,033	980	928	877	859	807	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Principal paid on finance lease						1,033	980	928	877	859	807	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
69,572	73,976	80,323	91,540	38,730	36,529	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net cash provided by financing activities						69,572	73,976	80,323	91,540	38,730	36,529	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Effect of exchange rate changes on cash and cash equivalents
-1,307	-6,136	-3,986	-3,017	728	-774	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Effect of exchange rate changes on cash and cash equivalents						-1,307	-6,136	-3,986	-3,017	728	-774	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
-2,796	31,839	70,634	75,036	-9,909	-27,860	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Net (decrease) increase in cash, cash equivalents and restricted cash						-2,796	31,839	70,634	75,036	-9,909	-27,860	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
879	1,070	1,285	1,360	1,504	1,578	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Taxes paid, net of refunds						879	1,070	1,285	1,360	1,504	1,578	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other interest paid
4,237	4,265	4,451	4,466	4,504	4,503	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Other interest paid						4,237	4,265	4,451	4,466	4,504	4,503	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
1,633	987	-164	909	-1,754	-1,235	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx
Purchases of property and equipment included in accounts payable and accrued liabilities						1,633	987	-164	909	-1,754	-1,235	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx	xxxxx