Public research preview
Rob Bresnahan, Representative disclosure: Biogen Inc. - Common Stock (BIIB)
Disclosed a buy transaction in Biogen Inc. - Common Stock (BIIB). Use this page to inspect source evidence, confidence scores, filing delay, and post-disclosure price movement before deciding whether to research the signal further.
This public page is for public-disclosure research only. It is not investment advice and does not place orders. Verify the official source before relying on any signal.
Evidence passport
Official-source context and parser confidence before any simulation or alert decision.
- Source
- House STOCK Act disclosures
- Published
- 9 Jun 2025, 00.00
- Parser confidence
- 94%
- Instrument mapping
- 95%
- Filing delay
- 25 days
Timeline
Transaction date
15 May 2025
Public disclosure
9 Jun 2025
Now
Tracked today
Filing delay: 25 days
Price movement
Complete coverage
- Provider
- Yahoo Finance daily close
- Fetched
- 10 Jun 2026
Stock path
BIIB from pre-transaction context through latest close.
Bought
15 May 2025 · 123,7 USD
- Observed transaction close
- 123,7
- Observed disclosure close
- 134,15
- Observed latest close
- 196,105
- Pre-disclosure move
- +8.4%
- Post-disclosure move
- +46.2%
- Market-adjusted move
- +46.2%
- Pre-disclosure peak run-up
- +8.4%
- Retrace from peak
- 0.0%
Why Copy Window is Probably too late
Supporting factors
- Parsed buy disclosure for ordinary shares from House STOCK Act disclosures.
- Reported amount is $1,001 - $15,000.
- Post-disclosure move is calculated from Yahoo Finance daily close daily closes.
Cautions
- Yahoo Finance daily close coverage is end-of-day and should be verified against the official price source.
- Review the original source document before making any investment decision.
Source document
House STOCK Act disclosures, published 9 Jun 2025, 00.00
- Parser confidence
- 94%
- Instrument mapping
- 95%