Comparable stake leader
PERCEPTIVE ADVISORS LLC
SEC ownership of ALBIREO PHARMA, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001322505.
Disclosed value leader
PERCEPTIVE ADVISORS LLC
Comparable rows
0/5
Latest evidence
02 Mar 2023
- Parsed ownership sources
-
3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
PERCEPTIVE ADVISORS LLC
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
02 Mar 2023
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001322505
- Issuer location
- Boston, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of ALBIREO PHARMA, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
PERCEPTIVE ADVISORS LLC
Disclosed value leader
PERCEPTIVE ADVISORS LLC
Comparable rows
0/5
Latest evidence
02 Mar 2023
3/4/5
Highest disclosed value: $84,959,867
5 rows are not safely comparable across share classes.
Quick read
PERCEPTIVE ADVISORS LLC has the largest disclosed position value at $84.96M.
0 of 5 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens PERCEPTIVE ADVISORS LLC's linked filing trail.
Disclosed position value
Top 3
PERCEPTIVE ADVISORS LLC
$84.96M
Patrick Taylor Horn
$541.1K
Martha J. Carter
$160K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-5 of 5 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$84,959,867
1,939,723 shares
|
— | 11 Oct 2022 |
| Patrick Taylor Horn |
3/4/5
Chief Medical Officer
|
—
class O/S missing
|
$541,149
12,355 shares
|
— | 22 Oct 2021 |
| Martha J. Carter |
3/4/5
Chief Regulatory Officer
|
—
class O/S missing
|
$160,045
3,654 shares
|
— | 02 Mar 2023 |
| Anne Klibanski |
3/4/5
Director
|
—
class O/S missing
|
—
8,000 shares
|
— | 24 Jun 2021 |
| Roger Jeffs |
3/4/5
Director
|
—
class O/S missing
|
—
8,000 shares
|
— | 24 Jun 2021 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 17 Aug 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-19 of 19 reporting-owner rows connected to ALBIREO PHARMA, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
19
Largest Forms 3/4/5 holder
PERCEPTIVE ADVISORS LLC
Net 12M change
$0
Latest report
02 Mar 2023
Recent insider transactions for ALBIREO PHARMA, INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.