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OLE ANDREAS HALVORSEN

CIK 1133006 · last filed 2025-07-01

OLE ANDREAS HALVORSEN is a corporate insider who has filed 7 SEC Form 4 insider transactions across 4 companies since 2019. The most recent filing shows the insider sold $1.23B of BBIO on Jul 1, 2025. Across all open-market trades the lifetime net is −$3.05B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.52B across reported positions. 117 SEC filings were submitted jointly with David C. Ott.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$2.52B

Companies

4

Total Filings

7

Lifetime Open-Market Net

-$3.05B

Filer Profile

Reported Address
600 WASHINGTON BLVD.
FLOOR 11
STAMFORD, CT 06901
Related Filers
David C. Ott — 117 joint filings, latest 2025-10-09
Rose Sharon Shabet — 103 joint filings, latest 2025-10-09
VIKING GLOBAL INVESTORS LP — 93 joint filings, latest 2025-10-09
Viking Global Opportunities GP LLC — 79 joint filings, latest 2025-10-09
Viking Global Opportunities Illiquid Investments Sub-Master LP — 78 joint filings, latest 2025-10-09
Viking Global Opportunities Portfolio GP LLC — 78 joint filings, latest 2025-10-09
VIKING GLOBAL PERFORMANCE LLC — 32 joint filings, latest 2024-06-18
Viking Global Opportunities Parent GP LLC — 31 joint filings, latest 2025-10-09
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
BBIO 10%+ Owner 18,555,375 $72.44 $1.34B -$2.09B 2 2025-07-01
ADPT 10%+ Owner 30,993,708 $24.20 $750.05M -$990.30M 1 2020-11-13
INBX 10%+ Owner 3,878,559 $109.27 $423.81M $27.28M 1 2020-08-28
Urovant Sciences Ltd. (UROV) Delisted 10%+ Owner 22,855,056 $16.24 $371.17M $2.62M 2 2019-06-19

Recent Filings

7 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2025-07-01 BBIO Sell (S) −28,000,000 -$1.23B EDGAR
2025-01-31 BBIO Sell (S) −24,524,928 -$855.92M EDGAR
2024-02-28 — Other (J) −53,141,600 $0
2020-11-13 ADPT Sell (S) −20,000,000 -$990.30M EDGAR
2020-08-28 INBX Buy (P) +1,441,752 $27.28M EDGAR
2019-06-19 Urovant Sciences Ltd. (UROV) Delisted Buy (P) +182,040 $1.51M EDGAR
2019-05-29 Urovant Sciences Ltd. (UROV) Delisted Buy (P) +144,850 $1.10M EDGAR
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.