PERCEPTIVE ADVISORS LLC

Director · Ten-percent owner · IMTX, FRNM, KARD, MGTX, SLDB, OBIO …

As of 2026-09-16, PERCEPTIVE ADVISORS LLC has 78 Form 4 transactions on record across 8 companies — 54 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market purchases filed in August in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $0Indirect: $281.5M$281.5Mas of 2026-09-16
  • Direct $0
  • Indirect $281.5M
FRNMindirect10,871,847 sh$160.1M
IMTXindirect11,246,516 sh$97.2M
OBIOindirect1,500,000 sh$9.0M
ALDXindirect5,875,851 sh$8.0M
ACRVindirect3,104,139 sh$5.3M
MGTXindirect60,000 sh$766K
SLDBindirect77,500 sh$676K
KARDindirect20,706 sh$358K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

MGTX · 28 trades
2026-06-11: Award / grant, 60,000 sh ($0)2026-04-17: Award / grant, 555,555 sh ($5.0M)2026-03-25: Award / grant, 300,000 sh2026-03-25: Award / grant, 400,000 sh2026-03-25: Disposition, 300,000 sh2026-03-25: Disposition, 400,000 sh2026-03-25: Award / grant, 300,000 sh2026-03-25: Award / grant, 400,000 sh2026-03-25: Disposition, 400,000 sh2026-03-25: Disposition, 300,000 sh2026-03-25: Award / grant, 300,000 sh2026-03-25: Award / grant, 400,000 sh2026-03-25: Disposition, 300,000 sh2026-03-25: Disposition, 400,000 sh2026-03-25: Award / grant, 300,000 sh2026-03-25: Award / grant, 400,000 sh2026-03-25: Disposition, 300,000 sh2026-03-25: Disposition, 400,000 sh2025-12-31: Disposition, 2,300,000 sh ($18.2M)2025-06-12: Award / grant, 45,000 sh ($0)2022-08-02: Award / grant, 300,000 sh2022-08-02: Award / grant, 300,000 sh2022-08-02: Award / grant, 400,000 sh2022-08-02: Award / grant, 300,000 sh2022-08-02: Award / grant, 300,000 sh2022-08-02: Award / grant, 400,000 sh2022-08-02: Award / grant, 400,000 sh2022-08-02: Award / grant, 400,000 sh
ACRV · 5 trades
2025-05-01: Sale, 298,886 sh ($401K)2025-04-30: Sale, 437,881 sh ($617K)2025-04-29: Sale, 250,000 sh ($353K)2025-04-28: Sale, 215,283 sh ($336K)2025-04-25: Sale, 1,054,669 sh ($2.1M)
SLDB · 4 trades
2026-06-10: Award / grant, 77,500 sh ($0)2026-03-09: Award / grant, 8,912,655 sh ($50.0M)2025-06-12: Award / grant, 77,500 sh ($0)2025-02-19: Purchase, 5,000,000 sh ($20.1M)
IMTX · 2 trades
2026-08-26: Purchase, 863,060 sh ($7.5M)2026-06-16: Award / grant, 48,000 sh ($0)
OBIO · 2 trades
2025-08-01: Purchase, 1,500,000 sh ($4.1M)2025-08-01: Purchase, 700,000 sh ($1.9M)
FRNM · 1 trade
2026-07-20: Award / grant, 5,500,000 sh ($55.0M)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-26IMTXPurchase863,060 @ $8.69$7.5M+8.3% of holding11,246,516Form 4
2025-11-13—Sale28,597 @ $3.90$112K−18.6% of holding124,859Form 4
2025-11-13—Sale3,213 @ $3.90$13K−18.6% of holding14,026Form 4
2025-11-12—Sale7,862 @ $4.06$32K−4.9% of holding153,456Form 4
2025-11-12—Sale883 @ $4.06$4K−4.9% of holding17,239Form 4
2025-11-11—Sale4,783 @ $4.31$21K−2.9% of holding161,318Form 4
2025-11-11—Sale537 @ $4.31$2K−2.9% of holding18,122Form 4
2025-11-10—Sale16,633 @ $4.54$76K−9.1% of holding166,101Form 4
2025-11-10—Sale1,869 @ $4.54$8K−9.1% of holding18,659Form 4
2025-11-07—Sale17,746 @ $4.75$84K−8.9% of holding182,734Form 4
2025-11-07—Sale1,993 @ $4.75$9K−8.8% of holding20,528Form 4
2025-11-06—Sale28,902 @ $5.18$150K−12.6% of holding200,480Form 4
2025-11-06—Sale3,247 @ $5.18$17K−12.6% of holding22,521Form 4
2025-10-20—Purchase2,190,496 @ $1.60$3.5Mownership Δ n/a2,190,496Form 4
2025-10-20—Purchase1,344,999 @ $0.18$248Kownership Δ n/a1,344,999Form 4
2025-08-01OBIOPurchase1,500,000 @ $2.75$4.1Mownership Δ n/a1,500,000Form 4
2025-08-01OBIOPurchase700,000 @ $2.75$1.9M+15.2% of holding5,292,556Form 4
2025-05-01ACRVSale298,886 @ $1.34$401K−8.8% of holding3,104,139Form 4
2025-04-30ACRVSale437,881 @ $1.41$617K−11.4% of holding3,403,025Form 4
2025-04-29ACRVSale250,000 @ $1.41$353K−6.1% of holding3,840,906Form 4
2025-04-28ACRVSale215,283 @ $1.56$336K−5.0% of holding4,090,906Form 4
2025-04-25ACRVSale1,054,669 @ $1.95$2.1M−19.7% of holding4,306,189Form 4
2025-04-03ALDXSale3,400,000 @ $1.42$4.8M−36.7% of holding5,875,851Form 4
2025-02-19SLDBPurchase5,000,000 @ $4.03$20.1M+73.2% of holding11,833,539Form 4
54 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-07-20FRNMAward / grant5,500,00010,871,847Form 4
2026-06-23—Award / grant28,00028,000Form 4
2026-06-17KARDAward / grant20,70620,706Form 4
2026-06-16IMTXAward / grant48,00048,000Form 4
2026-06-11MGTXAward / grant60,00060,000Form 4
2026-06-10SLDBAward / grant77,50077,500Form 4
2026-04-17MGTXAward / grant555,55510,786,658Form 4
2026-04-09—Award / grant28,00028,000Form 4
2026-03-25MGTXAward / grant300,000300,000Form 4
2026-03-25MGTXAward / grant400,000400,000Form 4
2026-03-25MGTXDisposition300,0000Form 4
2026-03-25MGTXDisposition400,0000Form 4
2026-03-25MGTXAward / grant300,000300,000Form 4
2026-03-25MGTXAward / grant400,000400,000Form 4
2026-03-25MGTXDisposition400,0000Form 4
2026-03-25MGTXDisposition300,0000Form 4
2026-03-25MGTXAward / grant300,000300,000Form 4
2026-03-25MGTXAward / grant400,000400,000Form 4
2026-03-25MGTXDisposition300,0000Form 4
2026-03-25MGTXDisposition400,0000Form 4
2026-03-25MGTXAward / grant300,000300,000Form 4
2026-03-25MGTXAward / grant400,000400,000Form 4
2026-03-25MGTXDisposition300,0000Form 4
2026-03-25MGTXDisposition400,0000Form 4
2026-03-09SLDBAward / grant8,912,6558,912,655Form 4
2025-12-31MGTXDisposition2,300,00010,231,103Form 4
2025-12-23—Award / grant3,838,5833,838,583Form 4
2025-12-23—Award / grant3,543,3073,543,307Form 4
2025-12-23—Award / grant1,372,9351,372,935Form 4
2025-12-23—Award / grant1,279,5261,279,526Form 4
2025-12-23—Award / grant1,181,1011,181,101Form 4
2025-12-23—Award / grant989,2701,529,566Form 4
2025-12-23—Award / grant457,645457,645Form 4
2025-12-23—Award / grant329,756329,756Form 4
2025-12-23—Award / grant5,502,4025,502,402Form 4
2025-12-23—Award / grant5,502,4025,502,402Form 4
2025-12-23—Award / grant5,502,4025,502,402Form 4
2025-12-23—Award / grant5,502,4025,502,402Form 4
2025-12-23—Award / grant5,502,4025,502,402Form 4
2025-06-12SLDBAward / grant77,50077,500Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.