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Stock brief · the live tape
RAREUltragenyx Pharmaceutical Inc.
Health Care
$25.61
▲ $0.61 (+2.4%) · 30dclose Friday, August 28, 2026
Disclosed flow is one-sided toward buying.
1 member · 4 disclosed trades · 39 insider filings
The Hill
▲ 4▼ 0
4 buys · 0 sellsThe Boardroom
▲ 30▼ 9
30 buys · 9 sells · 39 filingsFeeding Time13F lens lands with fund ingestion
What is behind it
Recent Signal Scores, decayed52
Events counted, 90d6
Net congressional flowmixed
The tape
Price with a twin dot per disclosed trade: filled at the trade, hollow at the filing. The dashed gap is what the market did in between, not anyone’s return.
trade (congress)filingtrade (insider)call legput leg
The cost of chasing
Each rail runs from their trade to their filing. The hatched part is the move a copier missed to the disclosure lag; the solid part is what copying at the filing kept.
Cisneros+16.0+10.6
Cisneros+25.2+13.3
Cisneros-7.0-15.5
Cisneros-5.8-11.7
Median copy kept -0.5% from the filing vs +5.1% from the trade date; the lag took 5.6 pts. The S&P returned +16.9% over the same windows. Numbers describe the window shown; they are not a forecast.
Who is behind it
Congress members with a disclosed position, biggest first. Click through to their dossier.
Committee overlap is a fact, not an accusation. An option leg behind a share buy reads very differently from a plain purchase, so it is called out but never scored as intent.
The boardroom
Scheduled 10b5-1 sales are usually noise, set on autopilot months ago. The unscheduled ones are the tell.
Parschauer Karah HerdmanEVP and Chief Legal OfficerScheduled · 10b5-1
Horn HowardChief Financial OfficerScheduled · 10b5-1
Horn HowardChief Financial OfficerScheduled · 10b5-1
Parschauer Karah HerdmanEVP and Chief Legal OfficerScheduled · 10b5-1
Sanders Corazon (Corsee) D.DirectorUnscheduled
Horn HowardChief Financial OfficerScheduled · 10b5-1
SULIMAN SHEHNAAZDirectorUnscheduled
SULIMAN SHEHNAAZDirectorUnscheduled
Ray AmritDirectorUnscheduled
Ray AmritDirectorUnscheduled
Sanders Corazon (Corsee) D.DirectorUnscheduled
Sanders Corazon (Corsee) D.DirectorUnscheduled
NARACHI MICHAELDirectorUnscheduled
NARACHI MICHAELDirectorUnscheduled
WELCH DANIEL GDirectorUnscheduled
WELCH DANIEL GDirectorUnscheduled
Dunsire DeborahDirectorUnscheduled
Dunsire DeborahDirectorUnscheduled
SULIMAN SHEHNAAZDirectorUnscheduled
Fust Matthew KDirectorUnscheduled
Fust Matthew KDirectorUnscheduled
Crombez EricEVP and Chief Medical OfficerUnscheduled
Horn HowardChief Financial OfficerScheduled · 10b5-1
Huizenga Theodore AlanSVP, Chief Accounting OfficerUnscheduled
Huizenga Theodore AlanSVP, Chief Accounting OfficerUnscheduled
Parschauer Karah HerdmanEVP and Chief Legal OfficerUnscheduled
Harris ErikEVP & Chief Commercial OfficerUnscheduled
Crombez EricEVP and Chief Medical OfficerUnscheduled
Horn HowardChief Financial OfficerUnscheduled
KAKKIS EMIL DPresident & CEO, DirectorUnscheduled
KAKKIS EMIL DPresident & CEO, DirectorUnscheduled
Huang Dennis KarlSee RemarksUnscheduled
Pinion John RichardSee RemarksUnscheduled
Parschauer Karah HerdmanEVP and Chief Legal OfficerUnscheduled
Harris ErikEVP & Chief Commercial OfficerUnscheduled
Crombez EricEVP and Chief Medical OfficerUnscheduled
Horn HowardChief Financial OfficerUnscheduled
Huang Dennis KarlSee RemarksUnscheduled
Pinion John RichardSee RemarksUnscheduled
The forward book
Every disclosed option leg on this ticker: what was filed, and where the strike sits versus today.
No disclosed option legs on RARE yet. They plot here the day they file.
A call and a put are shown as filed. We do not infer whether a leg is a hedge or a leveraged bet, because the filing does not say. Read the strike and expiry, not an implied intent.
The fund book
Tracked 13F holders and how their position moved, quarter over quarter.
13F fund positions on RARE light up when fund ingestion lands. Quarter-end marks, up to 45 days lagged, never live holdings.
Cross-check
When different sources file on the same name inside a window. Overlap like this is rare.
No convergence: RARE is not showing congress and insider filings together in the last 90 days.
Sources file on different clocks; an overlap like this is rare.
⚠️ Public information, sourced from STOCK Act, Form 4 and 13F filings. Ranges use midpoints. Price paths between a trade and its filing are market moves, not anyone’s return. Not financial advice.