Prothena Corporation plc (PRTA)

NASDAQ: PRTA · Real-Time Price · USD

8.16

-0.07 (-0.85%)

At close: Nov 13, 2026, 4:00 PM EST

8.16

0.00 (0.00%)

After-hours: Nov 13, 2026, 7:45 PM EST

Prothena Corporation Balance Sheet

Financials in millions USD. Fiscal year is January - December.

Millions USD. Fiscal year is Jan - Dec.

Assets

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Sep '26 Sep 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
Cash & Equivalents	271.37	307.53	471.39	618.83	710.41	579.09
Cash & Short-Term Investments	271.37	307.53	471.39	618.83	710.41	579.09
Cash Growth	-17.98%	-34.76%	-23.83%	-12.89%	22.68%	96.05%
Accounts Receivable	-	-	-	5.16	-	-
Other Receivables	-	-	-	-	0.06	0.01
Receivables	-	-	-	5.16	0.06	0.01
Prepaid Expenses	1.72	5.91	12.86	0.8	6.92	4.94
Restricted Cash	-	-	-	1.35	-	-
Other Current Assets	0.77	1.75	1.17	13.14	1.71	0.77
Total Current Assets	273.86	315.19	485.41	639.28	719.1	584.81
Property, Plant & Equipment	8.32	10.27	13.79	16	8.01	14.14
Long-Term Deferred Tax Assets	-	-	43.24	33.89	18.2	7.07
Other Long-Term Assets	1.34	1.34	4.67	7.21	12.73	3.35
Total Assets	283.52	326.8	547.11	696.38	758.04	609.37

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Sep '26 Sep 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
Accounts Payable	1.69	5.88	7.77	25.39	9.27	3.69
Accrued Expenses	5.82	15.9	28.34	28.26	22.46	15.76
Current Portion of Leases	3.01	2.89	2.61	1.11	6.47	5.94
Current Unearned Revenue	-	2.66	8.85	-	11.44	7.66
Other Current Liabilities	0.91	13.52	0.93	2.13	0.5	0.41
Total Current Liabilities	11.43	40.84	48.5	56.89	50.15	33.45
Long-Term Leases	3.25	5.49	8.23	10.72	-	6.39
Long-Term Unearned Revenue	-	-	3.45	67.41	85.29	102.93
Other Long-Term Liabilities	-	-	-	-	0.55	0.55
Total Liabilities	14.68	46.33	60.18	135.02	135.99	143.32

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Sep '26 Sep 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
Common Stock	0.51	0.54	0.54	0.54	0.52	0.47
Additional Paid-In Capital	1,617	1,626	1,589	1,541	1,455	1,182
Retained Earnings	-1,349	-1,346	-1,102	-980.03	-833	-716.05
Shareholders' Equity	268.84	280.47	486.93	561.37	622.04	466.04
Total Liabilities & Equity	283.52	326.8	547.11	696.38	758.04	609.37

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Sep '26 Sep 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
Total Debt	6.26	8.37	10.84	11.84	6.47	12.33
Net Cash (Debt)	265.11	299.16	460.55	607	703.93	566.77
Net Cash Growth	-17.61%	-35.04%	-24.13%	-13.77%	24.20%	104.21%
Net Cash Per Share	5.02	5.56	8.56	11.41	14.86	11.69
Filing Date Shares Outstanding	51.35	53.83	53.83	53.72	52.56	46.69
Total Common Shares Outstanding	51.34	53.83	53.83	53.68	52.1	46.66
Working Capital	262.43	274.35	436.91	582.39	668.95	551.36
Book Value Per Share	5.24	5.21	9.05	10.46	11.94	9.99
Tangible Book Value	268.84	280.47	486.93	561.37	622.04	466.04
Tangible Book Value Per Share	5.24	5.21	9.05	10.46	11.94	9.99
Machinery	7.04	7.07	9.14	9.02	9.9	9.76
Leasehold Improvements	-	-	-	-	1.5	1.39

SEC Filings: 10-K · 10-Q