Adage Capital Management, L.P.

CIK 1535978 · last filed 2025-10-17

Adage Capital Management, L.P. is a corporate insider who has filed 2 SEC Form 4 insider transactions across 2 companies since 2025. The most recent filing shows the insider sold $99.6M of PRAX on Oct 17, 2025. Across all open-market trades the lifetime net is +$105.3M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $659.2M across reported positions.

"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.

Disclosed Exposure

$659.22M

Companies

2

Total Filings

2

Lifetime Open-Market Net

$105.32M

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
PRAX	10%+ Owner	2,359,116	$266.58	$628.89M	$99.59M	1	2025-10-17
SLDB	10%+ Owner	4,248,084	$7.14	$30.33M	$5.73M	1	2025-02-19

Recent Filings

2 filings

Form 4 transactions across all companies, newest first.

Filed	Symbol	Action	Net Shares	Net $	Link
2025-10-17	PRAX	Sell (S)	+941,730	$99.59M	EDGAR
2025-02-19	SLDB	Buy (P)	+757,635	$5.73M	EDGAR

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.