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13F-HR filed by Siren, L.L.C.

Siren, L.L.C. filed this 13F-HR for the quarter ended 2025-09-30, filed 2025-11-13, with 115 holding rows worth $2,556,293,148.

Accession
0002005245-25-000012
Filed
2025-11-13
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q3 2025

A holdings report, 117 entries on the cover page, a total value of $2,556,293,148 stated on the cover page (in dollars after the unit check, H1), rows summing to $2,556,293,148 with VALUE read as dollars as filed, 13F file number 028-24464. The quarter's positions are built on this report. The resolved quarter.

Other managers

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
SCHOLAR ROCK HLDG CORP80706P103COM9,250,005$344,470,186dollars as filed
KYMERA THERAPEUTICS INC501575104COM3,428,150$194,033,290dollars as filed
BEONE MEDICINES LTD SPONSORED ADS07725L102ADR492,990$167,961,693dollars as filed
ARROWHEAD PHARMACEUTICALS IN04280A100COM2,669,880$92,084,161dollars as filed
BICARA THERAPEUTICS INC055477103COM5,216,969$82,375,941dollars as filed
CENTESSA PHARMACEUTICALS PLC152309100SPONSORED ADS3,227,517$78,267,287dollars as filed
CRINETICS PHARMACEUTICALS INC COM22663K107Stock1,688,611$70,330,648dollars as filed
EDGEWISE THERAPEUTICS INC28036F105COM3,897,099$63,210,946dollars as filed
DISC MEDICINE INC COM254604101Stock913,401$60,357,538dollars as filed
DYNE THERAPEUTICS INC COM26818M108Stock4,729,174$59,824,051dollars as filed
APELLIS PHARMACEUTICALS INC03753U106COM2,578,396$58,349,101dollars as filed
AVIDITY BIOSCIENCES INC COM05370A108Stock1,285,610$56,014,028dollars as filed
STOKE THERAPEUTICS INC86150R107COM2,247,347$52,812,655dollars as filed
LEXICON PHARMACEUTICALS INC528872302COMMON STOCK38,918,903$52,540,519dollars as filed
RHYTHM PHARMACEUTICALS INC76243J105COM499,975$50,492,475dollars as filed
TANGO THERAPEUTICS INC87583X109COM5,883,188$49,418,779dollars as filed
REVOLUTION MEDICINES INC COM76155X100Stock1,043,720$48,741,724dollars as filed
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR235,862$46,891,724dollars as filed
REZOLUTE INC76200L309COMMON STOCK4,870,000$45,778,000dollars as filed
SOLID BIOSCIENCES INC83422E204COMMON STOCK7,415,905$45,756,134dollars as filed
SEPTERNA INC COM81734D104Stock2,202,514$41,429,288dollars as filed
ARCUS BIOSCIENCES INC03969F109COM2,912,077$39,604,247dollars as filed
TAYSHA GENE THERAPIES INC877619106COMMON STOCK11,014,737$36,018,190dollars as filed
TABOOLA.COM LTDM8744T106ORD SHS9,969,495$33,995,978dollars as filed
XENON PHARMACEUTICALS INC COM98420N105Stock812,761$32,632,354dollars as filed
SOLENO THERAPEUTICS INC834203309COM467,342$31,592,319dollars as filed
RAPPORT THERAPEUTICS INC COM75383L102Stock1,053,469$31,288,029dollars as filed
STRUCTURE THERAPEUTICS INC COMP86366E106EQUITY1,026,811$28,750,708dollars as filed
WAVE LIFE SCIENCES LTD SHSY95308105Stock3,696,322$27,057,077dollars as filed
REMITLY GLOBAL INC75960P104COM1,618,271$26,377,817dollars as filed
COGENT BIOSCIENCES INC19240Q201COM1,724,279$24,760,646dollars as filed
TREVI THERAPEUTICS INC COM89532M101Stock2,536,867$23,212,333dollars as filed
NEWAMSTERDAM PHARMA CO NVN62509109COMMON STOCK765,705$21,776,650dollars as filed
KORRO BIO INC500946108COMMON STOCK418,833$20,057,912dollars as filed
ERASCA INC COM29479A108Stock8,757,249$19,090,803dollars as filed
IHS HOLDING LIMITEDG4701H109ORD SHS2,357,520$16,078,286dollars as filed
UNIQURE NVN90064101SHS275,200$16,063,424dollars as filed
BICYCLE THERAPEUTICS PLC-ADR088786108SPONSORED ADS2,012,752$15,578,700dollars as filed
SILENCE THERAPEUTICS PLC82686Q101ADS2,911,438$15,110,363dollars as filed
RAPT THERAPEUTICS INC75382E208COM NEW580,466$14,970,218dollars as filed
UPSTREAM BIO INC91678A107COMMON STOCK788,450$14,830,745dollars as filed
GOSSAMER BIO INC COM38341P102Stock5,208,968$13,699,586dollars as filed
ARRIVENT BIOPHARMA INC04272N102COM700,000$12,915,000dollars as filed
Amazon.com, Inc023135106COM58,500$12,844,845dollars as filed
ORIC PHARMACEUTICALS INC68622P109COM1,007,575$12,090,900dollars as filed
DENALI THERAPEUTICS INC COM24823R105Stock821,513$11,928,369dollars as filed
IONQ INC COM46222L108Stock170,000$10,455,000dollars as filed
SIONNA THERAPEUTICS INC829401108COMMON STOCK325,000$9,558,250dollars as filed
CROWDSTRIKE HLDGS INC22788C105COM18,500$9,072,030dollars as filed
Microsoft Corp594918104COM17,150$8,882,843dollars as filed
SEER INC81578P106COM CL A4,000,000$8,680,000dollars as filed
NEBIUS GROUP N.V.N97284108SHS CLASS A72,600$8,150,802dollars as filed
NEUMORA THERAPEUTICS INC.640979100COM4,358,283$7,932,075dollars as filed
TAIWAN SEMICONDUCTOR MFG874039100SPONSORED ADS28,200$7,875,978dollars as filed
Salesforce.com, Inc79466L302COM30,100$7,133,700dollars as filed
CULLINAN THERAPEUTICS INC230031106COM1,193,410$7,076,921dollars as filed
NVIDIA Corp67066G104COM37,485$6,993,764dollars as filed
ServiceNow,Inc.81762P102COM7,126$6,557,915dollars as filed
SPYRE THERAPEUTICS INC00773J202COM NEW368,598$6,177,702dollars as filed
CARTESIAN THERAPEUTICS INC816212302COMMON STOCK563,272$5,756,640dollars as filed
PDD HOLDINGS INC SPONSORED ADS722304102ADR43,401$5,736,310dollars as filed
ELEDON PHARMACEUTICALS INC28617k101COM2,072,767$5,368,467dollars as filed
Adobe Inc00724F101COM15,051$5,309,240dollars as filed
Alphabet Inc. Reg. Shares A02079K305COM21,203$5,154,449dollars as filed
JFROG LTD ORD SHSM6191J100Stock107,116$5,069,800dollars as filed
SAGIMET BIOSCIENCES INC A786700104COMMON STOCK724,771$4,971,929dollars as filed
DYNATRACE INC COM NEW268150109Stock100,229$4,856,095dollars as filed
DATADOGINCCLASSA23804L103STOK32,925$4,688,520dollars as filed
NOVABRIDGE BIOSCIENCES44975P103CMN1,165,957$4,407,317dollars as filed
AGENUS INC00847G804COM NEW1,064,250$4,097,363dollars as filed
LEXEO THERAPEUTICS INC52886X107COMMON STOCK603,435$4,006,808dollars as filed
BLACK DIAMOND THERAPEUTICS I09203E105COM1,046,517$3,966,299dollars as filed
WHITEHAWK THERAPEUTICS INC00032Q104CMN2,082,000$3,955,800dollars as filed
VTV THERAPEUTICS INC918385204CL A NEW163,000$3,806,050dollars as filed
Instil Bio Inc45783C200COM NEW203,933$3,642,243dollars as filed
FOGHORN THERAPEUTICS INC344174107COMMON STOCK720,720$3,524,321dollars as filed
PROQR THERAPEUTICS NVN71542109SHS EURO1,552,183$3,306,150dollars as filed
NEW ORIENTAL ED & TECHNOLOGY SPON ADR647581206ADR62,000$3,290,340dollars as filed
COREWEAVE INC COM CL A21873S108COM24,000$3,284,400dollars as filed
PEPGEN INC COM713317105Stock700,000$3,234,000dollars as filed
GITLAB INC CLASS A COM37637K108Stock64,000$2,885,120dollars as filed
KE HLDGS INC SPONSORED ADS482497104ADR145,000$2,755,000dollars as filed
PALO ALTO NETWORKS INC697435105COM13,450$2,738,689dollars as filed
TENAX THERAPEUTICS INC88032L605COM NEW352,441$2,682,076dollars as filed
WORKIVA INC COM CL A98139A105Stock30,000$2,582,400dollars as filed
Qualcomm Incorporated747525103COM14,000$2,329,040dollars as filed
BIOAGE LABS INC COM09077V100Stock382,406$2,248,547dollars as filed
KEURIG DR PEPPER INC COM49271V100Stock77,050$1,965,546dollars as filed
HUBSPOTINC443573100STOK4,000$1,871,200dollars as filed
CHIPOTLEMEXICANGRILLI169656105STOK47,500$1,861,525dollars as filed
KALARIS THERAPEUTICS INC482929106COM318,264$1,839,566dollars as filed
GENERATION BIO CO37148K209COM NEW296,892$1,816,979dollars as filed
CELLEBRITE DI LTD ORDINARY SHARESM2197Q107Stock90,000$1,667,700dollars as filed
PRIMO BRANDS CORPORATION CLASS A COM SHS741623102Stock75,000$1,657,500dollars as filed
SPOTIFYTECHNOLOGYSAFL8681T102STOK2,173$1,516,754dollars as filed
NIQ GLOBAL INTELLIGENCE PLCG63755105ORDINARY SHARES95,000$1,491,500dollars as filed
MONDAY COM LTD SHSM7S64H106Stock7,000$1,355,830dollars as filed
SAILPOINT INC COM78781J109Stock50,000$1,104,000dollars as filed
ELASTIC N V ORD SHSN14506104Stock12,500$1,056,125dollars as filed
IRENLTDFQ4982L109STOK20,000$938,100dollars as filed
SEMRUSH HLDGS INC CL A COM81686C104Stock125,000$885,000dollars as filed
AMER SPORTS INCG0260P102COMMON STOCK25,000$868,750dollars as filed
PINTEREST INC CL A72352L106Stock25,000$804,250dollars as filed
FIGMA INC CL A316841105COM15,000$778,050dollars as filed
CONFLUENT INC20717M103CLASS A COM37,500$742,500dollars as filed
PROCORE TECHNOLOGIES INC COM74275K108Stock10,000$729,200dollars as filed
ASTERA LABS INC COM04626A103COM3,500$685,300dollars as filed
Tesla Motors, Inc88160R101COM1,500$667,080dollars as filed
CHIME FINL INC COM SHS CL A16935C109Stock25,000$504,250dollars as filed
CCC INTELLIGENT SOLUTIONS HLD COM12510Q100Stock50,000$455,500dollars as filed
KENVUE INC49177J102COM25,000$405,750dollars as filed
VERTIV HOLDINGS CO COM CL A92537N108Stock2,000$301,720dollars as filed
Cyclerion Therapeutics Inc23255M204COM116,155$267,157dollars as filed
CARIBOU BIOSCIENCES INC COM142038108Stock105,347$245,459dollars as filed
IRONWOOD PHARMACEUTICALS INC46333X108COMMON STOCK110,532$144,797dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0002005245-25-000012this filing2025-11-13acceptance time not in the bulk data set