Prothena Corporation plc (PRTA)

NASDAQ: PRTA · Real-Time Price · USD

8.20

-0.05 (-0.61%)

At close: Oct 23, 2026, 4:00 PM EDT

9.10

+0.90 (10.98%)

After-hours: Oct 23, 2026, 7:30 PM EDT

Prothena Corporation Income Statement

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

Millions USD. Fiscal year is Jan - Dec.

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Jun '26 Jun 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
Revenue	54.53	9.68	135.16	91.37	53.91	200.58
Revenue Growth	427.32%	-92.84%	47.92%	69.50%	-73.13%	23414.30%
Cost of Revenue	64.95	134.85	222.52	220.57	135.56	82.28
Gross Profit	-10.42	-125.17	-87.36	-129.2	-81.66	118.29
Selling, General & Admin	49.45	59.39	67.2	61.84	49.9	46.32
Operating Expenses	49.45	59.39	67.2	61.84	49.9	46.32
Operating Income	-59.87	-184.56	-154.56	-191.04	-131.56	71.98
Interest & Investment Income	10.97	14.14	25.82	31.01	6.35	0.04
Currency Exchange Gain (Loss)	0.19	-0.33	-0.19	-0.46	-0.4	-0.1
EBT Excluding Unusual Items	-48.71	-170.75	-128.93	-160.48	-125.61	71.92
Merger & Restructuring Charges	4.36	-30.08	-	-	-	-
Pretax Income	-44.35	-200.83	-128.93	-160.48	-125.61	71.92
Income Tax Expense	-0.36	43.26	-6.62	-13.45	-8.66	4.95
Net Income	-43.99	-244.09	-122.31	-147.03	-116.95	66.98
Net Income to Common	-43.99	-244.09	-122.31	-147.03	-116.95	66.98
Net Income Growth	-	-	-	-	-	-
Shares Outstanding (Basic)	53	54	54	53	47	44
Shares Outstanding (Diluted)	53	54	54	53	47	48
Shares Change	-0.82%	0.11%	1.04%	12.34%	-2.26%	21.42%
EPS (Basic)	-0.82	-4.53	-2.27	-2.76	-2.47	1.51
EPS (Diluted)	-0.83	-4.53	-2.27	-2.76	-2.47	1.38
EPS Growth	-	-	-	-	-	-

Additional Metrics

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Jun '26 Jun 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
Free Cash Flow	-60.71	-163.72	-150.35	-136.72	-109.29	92.03
Free Cash Flow Per Share	-1.14	-3.04	-2.80	-2.57	-2.31	1.90
Gross Margin	-19.11%	-	-64.64%	-141.40%	-151.48%	58.98%
Operating Margin	-109.79%	-1905.82%	-114.36%	-209.08%	-244.05%	35.88%
Profit Margin	-80.67%	-2520.57%	-90.50%	-160.92%	-216.95%	33.39%
Free Cash Flow Margin	-111.34%	-1690.60%	-111.24%	-149.63%	-202.74%	45.88%
EBITDA	-59.04	-183.67	-153.67	-190.11	-130.81	73.09
EBITDA Margin	-108.27%	-	-113.70%	-208.06%	-242.67%	36.44%
D&A For EBITDA	0.83	0.9	0.89	0.93	0.74	1.12
EBIT	-59.87	-184.56	-154.56	-191.04	-131.56	71.98
EBIT Margin	-109.79%	-	-114.36%	-209.08%	-244.05%	35.88%
Effective Tax Rate	-	-	-	-	-	6.88%
Revenue as Reported	54.53	9.68	135.16	91.37	53.91	200.58

SEC Filings: 10-K · 10-Q