🚨 $PRTA
The information in Item 2.02 of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended , or otherwise subject to the liabilities of that section.
The information in Item 2.02 of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended , or otherwise subject to the liabilities of that section.
SEC Filing: PRTA
Click to view the official SEC document.
www.sec.gov
November 5, 2026 at 9:13 PM
🚨 $PRTA
The information in Item 2.02 of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended , or otherwise subject to the liabilities of that section.
The information in Item 2.02 of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended , or otherwise subject to the liabilities of that section.
#PRTA Prothena Reports Third Quarter 2026 Financial Results and Business Highlights
https://www.stocktitan.net/news/PRTA/prothena-reports-third-quarter-2026-financial-results-and-business-6lieu55xvfot.html?utm_source=stocktitan-bluesky&utm_medium=social
https://www.stocktitan.net/news/PRTA/prothena-reports-third-quarter-2026-financial-results-and-business-6lieu55xvfot.html?utm_source=stocktitan-bluesky&utm_medium=social
Prothena Reports Third Quarter 2026 Financial Results and Business Highlights
Stock Titan provides an ultra-fast stock market news feed and multiple tools for traders and investors.
www.stocktitan.net
November 5, 2026 at 9:06 PM
#PRTA Prothena Reports Third Quarter 2026 Financial Results and Business Highlights
https://www.stocktitan.net/news/PRTA/prothena-reports-third-quarter-2026-financial-results-and-business-6lieu55xvfot.html?utm_source=stocktitan-bluesky&utm_medium=social
https://www.stocktitan.net/news/PRTA/prothena-reports-third-quarter-2026-financial-results-and-business-6lieu55xvfot.html?utm_source=stocktitan-bluesky&utm_medium=social
Update on our Oct 19 pick #$PRTA: Q3 R&D fell to $8.4M from $28.9M and the net loss to $16.5M from $36.5M, with revenue down to $0.6M. Cash is $271.4M, down from $307.5M in Dec after $26.6M of buybacks. No debt. The $100M buyback program expires Dec 31. Does it get renewed?
November 5, 2026 at 9:22 PM
Update on our Oct 19 pick #$PRTA: Q3 R&D fell to $8.4M from $28.9M and the net loss to $16.5M from $36.5M, with revenue down to $0.6M. Cash is $271.4M, down from $307.5M in Dec after $26.6M of buybacks. No debt. The $100M buyback program expires Dec 31. Does it get renewed?
Happy Halloween! We'll be doing a special Saturday stream at 2pm PDT, playing more Village in the Shade. Nothing like some cozy horror farming time.
www.twitch.tv/akioetc
youtube.com/live/PrTA-1L...
www.twitch.tv/akioetc
youtube.com/live/PrTA-1L...
October 31, 2026 at 8:20 PM
Happy Halloween! We'll be doing a special Saturday stream at 2pm PDT, playing more Village in the Shade. Nothing like some cozy horror farming time.
www.twitch.tv/akioetc
youtube.com/live/PrTA-1L...
www.twitch.tv/akioetc
youtube.com/live/PrTA-1L...
🚨 $PRTA
SCULLY WILLIAM P (Insider) reported special transactions (Non-P/S).
SCULLY WILLIAM P (Insider) reported special transactions (Non-P/S).
SEC Filing: PRTA
Click to view the official SEC document.
www.sec.gov
October 29, 2026 at 6:04 PM
🚨 $PRTA
SCULLY WILLIAM P (Insider) reported special transactions (Non-P/S).
SCULLY WILLIAM P (Insider) reported special transactions (Non-P/S).
October 29, 2026 at 8:34 PM
🚨 $PRTA
Following an internal strategic review, Bristol Myers Squibb informed Prothena Corporation plc on October 28, 2026 that it has decided not to advance PRX019 further in the clinic.
Following an internal strategic review, Bristol Myers Squibb informed Prothena Corporation plc on October 28, 2026 that it has decided not to advance PRX019 further in the clinic.
SEC Filing: PRTA
Click to view the official SEC document.
www.sec.gov
October 29, 2026 at 8:04 PM
🚨 $PRTA
Following an internal strategic review, Bristol Myers Squibb informed Prothena Corporation plc on October 28, 2026 that it has decided not to advance PRX019 further in the clinic.
Following an internal strategic review, Bristol Myers Squibb informed Prothena Corporation plc on October 28, 2026 that it has decided not to advance PRX019 further in the clinic.
Update on our Oct 19 pick #$PRTA: Bristol Myers won't take PRX019 further, so the $55M milestone we flagged is off, along with the rest of that license. Prothena's 2026 cash guidance never counted it, and BMS is still running the Phase 2 Alzheimer's trial of moponetug.
October 29, 2026 at 8:34 PM
Update on our Oct 19 pick #$PRTA: Bristol Myers won't take PRX019 further, so the $55M milestone we flagged is off, along with the rest of that license. Prothena's 2026 cash guidance never counted it, and BMS is still running the Phase 2 Alzheimer's trial of moponetug.
🚨 $PRTA
SCULLY WILLIAM P (Insider) bought 150,000 shares at an average price of $8.1470 per common share. (Date: 2026-10-23)
SCULLY WILLIAM P (Insider) bought 150,000 shares at an average price of $8.1470 per common share. (Date: 2026-10-23)
SEC Filing: PRTA
Click to view the official SEC document.
www.sec.gov
October 26, 2026 at 8:22 PM
🚨 $PRTA
SCULLY WILLIAM P (Insider) bought 150,000 shares at an average price of $8.1470 per common share. (Date: 2026-10-23)
SCULLY WILLIAM P (Insider) bought 150,000 shares at an average price of $8.1470 per common share. (Date: 2026-10-23)
$819k into $PRTA. 10% Owner Scully bought 100k shares. Oct 22
https://watch4insider.com/filing/0001045463-26-000022
Get alerted the minute insiders file → watch4insider.com
https://watch4insider.com/filing/0001045463-26-000022
Get alerted the minute insiders file → watch4insider.com
October 26, 2026 at 9:12 PM
$819k into $PRTA. 10% Owner Scully bought 100k shares. Oct 22
https://watch4insider.com/filing/0001045463-26-000022
Get alerted the minute insiders file → watch4insider.com
https://watch4insider.com/filing/0001045463-26-000022
Get alerted the minute insiders file → watch4insider.com
Prothena Corp Public ($PRTA) – Insider Purchase
• Insider: William P Scully, 10% owner
• Bought: 150,000 shares (about $1M)
• Price: about $8.15 a share · Oct 22-23
• Now Holds: 1,187,000 shares directly
📊 More at www.elixstocks.com
Educational only. Not investment advice.
#InsiderBuying #Stocks
• Insider: William P Scully, 10% owner
• Bought: 150,000 shares (about $1M)
• Price: about $8.15 a share · Oct 22-23
• Now Holds: 1,187,000 shares directly
📊 More at www.elixstocks.com
Educational only. Not investment advice.
#InsiderBuying #Stocks
William P Scully (10% owner) bought $1M of Prothena Corp Public ($PRTA)
Form 4 filed Oct 26. Every line of the filing.
elixstocks.com
October 26, 2026 at 8:21 PM
Prothena Corp Public ($PRTA) – Insider Purchase
• Insider: William P Scully, 10% owner
• Bought: 150,000 shares (about $1M)
• Price: about $8.15 a share · Oct 22-23
• Now Holds: 1,187,000 shares directly
📊 More at www.elixstocks.com
Educational only. Not investment advice.
#InsiderBuying #Stocks
• Insider: William P Scully, 10% owner
• Bought: 150,000 shares (about $1M)
• Price: about $8.15 a share · Oct 22-23
• Now Holds: 1,187,000 shares directly
📊 More at www.elixstocks.com
Educational only. Not investment advice.
#InsiderBuying #Stocks
🕵️ Notable insider moves Oct 26 💰
🟢 BUYS: #$BPRE director $2.13M | #$PRTA 10% owner $1.22M
🔴 SELLS: #$ISRG director $9.08M | #$CRL director $8.41M | #$LRCX CEO $7.13M
Sells ≈7x buys in dollars, but buying with your own cash says more 🧠
@IntuitiveSurg @LamResearch @CharlesRiver @SECGov
Stage entries.
🟢 BUYS: #$BPRE director $2.13M | #$PRTA 10% owner $1.22M
🔴 SELLS: #$ISRG director $9.08M | #$CRL director $8.41M | #$LRCX CEO $7.13M
Sells ≈7x buys in dollars, but buying with your own cash says more 🧠
@IntuitiveSurg @LamResearch @CharlesRiver @SECGov
Stage entries.
October 26, 2026 at 10:38 PM
Recebi uma propaganda de uma lojinha dessas ~super cool~ de camisetas lá no instagram
Aí abri o site deles e prta começar que só vai até o G3 e aí vc vai ver o preço de cada camiseta e custa CENTO E CINQUENTA REAIS
Pelo amor de deus, sabe
Aí abri o site deles e prta começar que só vai até o G3 e aí vc vai ver o preço de cada camiseta e custa CENTO E CINQUENTA REAIS
Pelo amor de deus, sabe
October 25, 2026 at 8:31 AM
Recebi uma propaganda de uma lojinha dessas ~super cool~ de camisetas lá no instagram
Aí abri o site deles e prta começar que só vai até o G3 e aí vc vai ver o preço de cada camiseta e custa CENTO E CINQUENTA REAIS
Pelo amor de deus, sabe
Aí abri o site deles e prta começar que só vai até o G3 e aí vc vai ver o preço de cada camiseta e custa CENTO E CINQUENTA REAIS
Pelo amor de deus, sabe
Our daily picks since last Friday, scored to Thursday's close, losers left in:
$GCO +0.8%
$VRA +4.6%
$PRTA -1.2%
$FUNC +5.2%
$COSO +2.6%
$BSET +2.5%
$RGCO, today's pick, no close yet
Every call since our first on 29 Sep, taken together: +3.9%.
$GCO +0.8%
$VRA +4.6%
$PRTA -1.2%
$FUNC +5.2%
$COSO +2.6%
$BSET +2.5%
$RGCO, today's pick, no close yet
Every call since our first on 29 Sep, taken together: +3.9%.
October 24, 2026 at 1:09 AM
Our daily picks since last Friday, scored to Thursday's close, losers left in:
$GCO +0.8%
$VRA +4.6%
$PRTA -1.2%
$FUNC +5.2%
$COSO +2.6%
$BSET +2.5%
$RGCO, today's pick, no close yet
Every call since our first on 29 Sep, taken together: +3.9%.
$GCO +0.8%
$VRA +4.6%
$PRTA -1.2%
$FUNC +5.2%
$COSO +2.6%
$BSET +2.5%
$RGCO, today's pick, no close yet
Every call since our first on 29 Sep, taken together: +3.9%.
What we got wrong: $PRTA. We liked the cash, the R&D cut and the buyback, but with no product of its own and Phase 3 trials running to 2029, the wait may be long.
Track record: https://kryptonai.io/research/track-record?utm_source=bluesky&utm_medium=social&utm_campaign=lalc
Not investment advice.
Track record: https://kryptonai.io/research/track-record?utm_source=bluesky&utm_medium=social&utm_campaign=lalc
Not investment advice.
October 24, 2026 at 1:09 AM
What we got wrong: $PRTA. We liked the cash, the R&D cut and the buyback, but with no product of its own and Phase 3 trials running to 2029, the wait may be long.
Track record: https://kryptonai.io/research/track-record?utm_source=bluesky&utm_medium=social&utm_campaign=lalc
Not investment advice.
Track record: https://kryptonai.io/research/track-record?utm_source=bluesky&utm_medium=social&utm_campaign=lalc
Not investment advice.
Full write-up, with the quarterly table and the filings: kryptonai.io/research/picks/PRTA
Prothena (PRTA) stock analysis: LALC Microcap of the Day
A 10% holder has bought about $10.9M of Prothena stock in the open market since May, while the company holds $288M of cash and no debt against a $429M market value.
kryptonai.io
October 19, 2026 at 6:40 PM
Full write-up, with the quarterly table and the filings: kryptonai.io/research/picks/PRTA
Prothena (#$PRTA): $288M of cash and no debt against a $429M market value, R&D cut to $8.8M a quarter, shares down 4.6% in a year, and a 10% holder has bought about $10.9M of stock since May. The catch: no product of its own.
Not investment advice.
Not investment advice.
October 19, 2026 at 6:24 PM
Prothena (#$PRTA): $288M of cash and no debt against a $429M market value, R&D cut to $8.8M a quarter, shares down 4.6% in a year, and a 10% holder has bought about $10.9M of stock since May. The catch: no product of its own.
Not investment advice.
Not investment advice.
$PEP director buys $23.7M in stock after outlook cut. $SAFX and $ZONE insiders buy heavily despite steep market drops and thin liquidity. $PRTA owner adds 110k shares ahead of Nov 5 earnings. DadFin rates $PEP highest on quality. #InsiderBuying #ValueInvesting
October 17, 2026 at 10:43 PM
$PEP director buys $23.7M in stock after outlook cut. $SAFX and $ZONE insiders buy heavily despite steep market drops and thin liquidity. $PRTA owner adds 110k shares ahead of Nov 5 earnings. DadFin rates $PEP highest on quality. #InsiderBuying #ValueInvesting
BOUGHT · PROTHENA CORP PUBLIC LTD CO (PRTA)
100,000 shares · $835K · Oct 13, 2026
https://insidervault.app/ticker/PRTA
100,000 shares · $835K · Oct 13, 2026
https://insidervault.app/ticker/PRTA
PROTHENA CORP PUBLIC LTD CO (PRTA) — insider trades
Insiders bought $835K of PRTA on Oct 13, 2026. Every Form 4 filing for this company, straight from the SEC.
insidervault.app
October 15, 2026 at 9:26 PM
BOUGHT · PROTHENA CORP PUBLIC LTD CO (PRTA)
100,000 shares · $835K · Oct 13, 2026
https://insidervault.app/ticker/PRTA
100,000 shares · $835K · Oct 13, 2026
https://insidervault.app/ticker/PRTA
🚨 $PRTA
SCULLY WILLIAM P (Insider) bought 110,000 shares at an average price of $8.3641 per common share. (Date: 2026-10-14)
SCULLY WILLIAM P (Insider) bought 110,000 shares at an average price of $8.3641 per common share. (Date: 2026-10-14)
SEC Filing: PRTA
Click to view the official SEC document.
www.sec.gov
October 15, 2026 at 8:22 PM
🚨 $PRTA
SCULLY WILLIAM P (Insider) bought 110,000 shares at an average price of $8.3641 per common share. (Date: 2026-10-14)
SCULLY WILLIAM P (Insider) bought 110,000 shares at an average price of $8.3641 per common share. (Date: 2026-10-14)
$835k into $PRTA. 10% Owner Scully bought 100k shares. Oct 13
https://watch4insider.com/filing/0001045463-26-000021
Get alerted the minute insiders file → watch4insider.com
https://watch4insider.com/filing/0001045463-26-000021
Get alerted the minute insiders file → watch4insider.com
October 15, 2026 at 9:12 PM
$835k into $PRTA. 10% Owner Scully bought 100k shares. Oct 13
https://watch4insider.com/filing/0001045463-26-000021
Get alerted the minute insiders file → watch4insider.com
https://watch4insider.com/filing/0001045463-26-000021
Get alerted the minute insiders file → watch4insider.com
Prothena Corp Public ($PRTA) – Insider Purchase
• Insider: William P Scully, 10% owner
• Bought: 110,000 shares (about $920K)
• Price: about $8.36 a share · Oct 13-14
• Filed: Oct 15 · Form 4
📊 More at www.elixstocks.com
Educational only. Not investment advice.
#InsiderBuying #Stocks
• Insider: William P Scully, 10% owner
• Bought: 110,000 shares (about $920K)
• Price: about $8.36 a share · Oct 13-14
• Filed: Oct 15 · Form 4
📊 More at www.elixstocks.com
Educational only. Not investment advice.
#InsiderBuying #Stocks
William P Scully (10% owner) bought $920K of Prothena Corp Public ($PRTA)
Form 4 filed Oct 15. Every line of the filing.
elixstocks.com
October 15, 2026 at 8:22 PM
Prothena Corp Public ($PRTA) – Insider Purchase
• Insider: William P Scully, 10% owner
• Bought: 110,000 shares (about $920K)
• Price: about $8.36 a share · Oct 13-14
• Filed: Oct 15 · Form 4
📊 More at www.elixstocks.com
Educational only. Not investment advice.
#InsiderBuying #Stocks
• Insider: William P Scully, 10% owner
• Bought: 110,000 shares (about $920K)
• Price: about $8.36 a share · Oct 13-14
• Filed: Oct 15 · Form 4
📊 More at www.elixstocks.com
Educational only. Not investment advice.
#InsiderBuying #Stocks
📊🕵️ Insider Form 4s Oct 8–9: 🟢 BUYS: #$BPRE director $8.5M, #$PRTA 10% owner $1.8M. 🔴 SELLS: #$HALO CEO $6.6M, #$BNTX CEO $5.9M, #$UTHR CEO $5.1M. Buys speak louder; sales are often pre-planned. Follow the money, verify the filings. 🧘 Not financial advice. #InsiderBuying #Biotech @SECGov @GuruFocus
October 12, 2026 at 8:52 PM
🚨 $PRTA
SCULLY WILLIAM P (Insider) bought 215,000 shares at an average price of $8.4700 per common share. (Date: 2026-10-08)
SCULLY WILLIAM P (Insider) bought 215,000 shares at an average price of $8.4700 per common share. (Date: 2026-10-08)
SEC Filing: PRTA
Click to view the official SEC document.
www.sec.gov
October 9, 2026 at 1:43 PM
🚨 $PRTA
SCULLY WILLIAM P (Insider) bought 215,000 shares at an average price of $8.4700 per common share. (Date: 2026-10-08)
SCULLY WILLIAM P (Insider) bought 215,000 shares at an average price of $8.4700 per common share. (Date: 2026-10-08)
▲ $PRTA Prothena Corp: 10% owner William P. Scully bought 125,000 ordinary shares at $8.40 and 90,000 at $8.57 (~$1.8M total), bringing stake to 529,000 shares [BULLISH]
October 9, 2026 at 5:15 PM
▲ $PRTA Prothena Corp: 10% owner William P. Scully bought 125,000 ordinary shares at $8.40 and 90,000 at $8.57 (~$1.8M total), bringing stake to 529,000 shares [BULLISH]