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Disclosery

PHAT PHATHOM PHARMACEUTICALS INC

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COMMON STOCK (common), issuer CIK 1783183

166 managers (174 13F filers) reported a position in PHAT shares at 2026-03-31, 68,888,566 shares in all. 31 filers opened a position and 35 filers sold out during the quarter.

Managers
166
13F filers
174
New
31
Added
75
Reduced
40
Sold out
35
Shares held by filers
68,888,566

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
Narula Sanjeevofficer (Chief Financial & Bus. Officer)2026-10-06-13,485 F$6.78Form 4

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Frazier Life Sciences Management, L.P.12,466,489$139M3.56%013F-HRTimeline
Medicxi Ventures Management (Jersey) Ltd7,464,572$82.9M8.45%013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.4,322,060$48M<0.01%+401,61413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.4,061,996$45.1M<0.01%+506,44813F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC4,022,909$44.7M0.03%+1,940,72913F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding3,654,671$40.6MnewTimeline
Carlyle Group Inc.in group Carlyle Group Inc.3,496,808$38.8M0.37%013F-HRTimelineGroup
NEA Management Company, LLC1,960,169$21.8M1.24%013F-HRTimeline
683 Capital Management, LLCin group 683 Capital Management, LLC1,850,000$20.6M1.91%+65,00013F-HRTimelineGroup
Ensign Peak Advisors, Inc1,627,806$18.1M0.03%-724,21413F-HR/ATimeline
Catalys Pacific, LLC1,493,854$16.6M7.19%+64,84013F-HRTimeline
GW&K Investment Management, LLC1,421,109$15.8M0.14%+114,43113F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,386,890$15.4M<0.01%+237,35413F-HRTimelineGroup
WASATCH ADVISORS LP1,340,916$14.9M0.1%+9,24713F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,328,045$14.8M<0.01%+254,61113F-HRTimelineGroup
NOMURA ASSET MANAGEMENT INTERNATIONAL I…in group NOMURA ASSET MANAGEMENT CO LTD1,205,369$13.4M0.02%new13F-HRTimelineGroup
SummitTX Capital, L.P.995,885$11.1M0.35%+478,06513F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources994,504$11M<0.01%new13F-HRTimelineGroup
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC925,000$10.3M0.2%new13F-HR/ATimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP860,692$9.56M0.01%new13F-HRTimelineGroup
Propel Bio Management, LLC841,272$9.35M5.9%+100,35413F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC626,196$6.96M<0.01%+234,15113F-HRTimelineGroup
EcoR1 Capital, LLC625,000$6.94M0.3%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP482,136$5.36M<0.01%+424,35313F-HRTimelineGroup
StepStone Group LP422,085$4.69M2.26%013F-HRTimeline
UBS Group AGgroup of 2 filers holding416,159$4.62M+81,145Timeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP414,956$4.61M<0.01%+58,49013F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co409,015$4.54M<0.01%+11,10513F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC383,058$4.26M<0.01%+71,74313F-HRTimelineGroup
Woodline Partners LP369,052$4.1M0.02%+181,76113F-HR/ATimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding360,941$4.01M-467,665Timeline
RENAISSANCE TECHNOLOGIES LLC305,800$3.4M0.01%new13F-HRTimeline
Trexquant Investment LP293,305$3.26M0.02%+156,48113F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC275,161$3.06M0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO287,430$3.03M<0.01%-9,25413F-HR/ATimelineGroup
Simplify Asset Management Inc.262,386$2.92M0.04%-59,54913F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC254,219$2.82M<0.01%+68,47513F-HR/ATimelineGroup
Avidity Partners Management LP249,390$2.77M0.56%+43,31413F-HR/ATimeline
Catalio Capital Management, LP247,767$2.75M0.58%-451,22913F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/208,115$2.31M<0.01%-50,88113F-HRTimelineGroup
Birchview Capital, LP195,000$2.17M1.23%013F-HRTimeline
NewEdge Advisors, LLC183,000$2.03M0.01%-17,82313F-HR/ATimeline
XTX Topco Ltdin group XTX Topco Ltd160,501$1.78M0.03%+121,10113F-HRTimelineGroup
Hennion & Walsh Asset Management, Inc.145,932$1.62M0.05%+30,95113F-HRTimeline
GILDER GAGNON HOWE & CO LLC139,889$1.55M0.02%-5,28513F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.132,457$1.47M<0.01%-128,61113F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp124,018$1.38M<0.01%+1,05113F-HRTimelineGroup
Nuveen, LLCin group TIAA117,301$1.3M<0.01%+8,45513F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…111,752$1.24M<0.01%-22,79413F-HRTimelineGroup
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.100,000$1.11M0.01%+49,70013F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP97,068$1.08M0.07%+14,44413F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management95,301$1.06M<0.01%-111,78413F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…94,638$1.05M0.01%-182,35113F-HRTimelineGroup
Swiss National Bank92,600$1.03M<0.01%+8,60013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…85,683$952K<0.01%+79,03913F-HRTimelineGroup
Freestone Grove Partners LP84,573$940K0.01%new13F-HRTimeline
HUSSMAN STRATEGIC ADVISORS, INC.84,000$933K0.2%-63,00013F-HRTimeline
KBC Group NVin group KBC Group NV77,139$857K<0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY76,681$852K<0.01%-41,10013F-HRTimelineGroup
Burkehill Global Management, LP75,000$833K0.04%new13F-HRTimeline
Engineers Gate Manager LP73,848$820K0.01%+29,59013F-HRTimeline
ALLIANCEBERNSTEIN L.P.49,390$819K<0.01%013F-HRTimeline
Creative Planningin group Creative Planning70,193$780K<0.01%-10,57313F-HRTimelineGroup
Penn Mutual Asset Management62,802$698K3.57%013F-HRTimeline
Campbell & CO Investment Adviser LLC62,023$689K0.04%-53,26113F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…57,986$644K0.18%+11,04913F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC55,468$616K<0.01%+1,02013F-HRTimelineGroup
RHUMBLINE ADVISERS55,439$616K<0.01%+3,34613F-HRTimeline
DIADEMA PARTNERS LP54,650$607K0.25%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP54,039$600K<0.01%+2,37813F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/52,453$583K<0.01%+15,38213F-HRTimeline
Stonepine Capital Management, LLC50,010$556K0.49%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN46,113$512K<0.01%-21,90313F-HR/ATimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD44,004$489K<0.01%+28,71913F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC42,900$477K0.03%013F-HRTimelineGroup
Aquatic Capital Management LLC40,852$454K0.01%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…40,222$447K<0.01%+7913F-HRTimeline
ALGERT GLOBAL LLC39,420$438K0.01%new13F-HR/ATimeline
VARCOV Co.39,173$435K0.16%-47,58613F-HRTimeline
TUDOR INVESTMENT CORP ET AL38,225$425K<0.01%+9,67113F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\36,459$405K<0.01%+3,07913F-HRTimelineGroup
TOCQUEVILLE ASSET MANAGEMENT L.P.in group TOCQUEVILLE ASSET MANAGEMENT …35,200$391K0.01%+50013F-HRTimelineGroup
ALLSTATE CORPin group ALLSTATE CORP32,687$363K<0.01%new13F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC32,230$358K<0.01%+1,29013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc32,037$356K<0.01%-2,21213F-HRTimelineGroup
Man Group plcin group Man Group plc30,352$337K<0.01%new13F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC29,369$326K<0.01%+91013F-HRTimelineGroup
Kera Capital Partners, Inc.26,826$298K0.04%+2,57113F-HRTimeline
Persistent Asset Partners Ltd26,766$297K0.12%+13,85013F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC26,445$294K<0.01%+9,03713F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC26,328$293K<0.01%+1,93813F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…25,845$287K<0.01%013F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding25,842$287K+3,925Timeline
BARCLAYS PLCin group BARCLAYS PLC25,357$282K<0.01%-59,50213F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…24,992$278K<0.01%+5,10213F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC24,676$274K<0.01%-8,74913F-HRTimeline
Summit Financial Wealth Advisors, LLC22,143$246K0.03%013F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson21,500$239K<0.01%013F-HR/ATimelineGroup
INSPIRION WEALTH ADVISORS, LLC19,914$221K0.03%+10013F-HRTimeline
Jain Global LLC18,262$203K<0.01%-3,47513F-HRTimeline
Fiduciary Trust Coin group Fiduciary Trust Co18,067$201K<0.01%+2,02713F-HRTimelineGroup
DARK FOREST CAPITAL MANAGEMENT LP17,460$194K0.02%-44,78813F-HRTimeline
LPL Financial LLC17,207$191K<0.01%new13F-HRTimeline
GROUP ONE TRADING LLC16,939$188K0.01%-86,74513F-HRTimeline
PROFUND ADVISORS LLC16,484$183K0.01%+92213F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…15,997$178K<0.01%new13F-HRTimelineGroup
DRW Securities, LLC15,921$177K0.01%new13F-HRTimeline
Schonfeld Strategic Advisors LLC15,614$173K<0.01%-15,33013F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC15,000$167K<0.01%+10013F-HRTimelineGroup
Bridgefront Capital, LLC14,954$166K0.04%-2,02713F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC14,671$163K<0.01%new13F-HRTimelineGroup
KLP KAPITALFORVALTNING AS14,000$156K<0.01%013F-HRTimeline
China Universal Asset Management Co., L…13,983$155K0.01%+2,39113F-HRTimeline
ExodusPoint Capital Management, LP13,293$148K<0.01%-9,10813F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …12,908$143K<0.01%+47013F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM12,857$143K<0.01%+99013F-HRTimeline
Dynamic Technology Lab Private Ltd12,111$135K0.02%new13F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd12,078$134K<0.01%new13F-HRTimelineGroup
Police & Firemen's Retirement System of…11,925$132K<0.01%013F-HRTimeline
Quantinno Capital Management LP11,536$128K<0.01%new13F-HRTimeline
PRIMORIS WEALTH ADVISORS, LLC11,449$127K0.09%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC11,348$126K<0.01%-7,70313F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS11,332$126K<0.01%+1,54213F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND10,770$120K<0.01%-30,98613F-HRTimeline
Allworth Financial LP10,540$117K<0.01%+9013F-HRTimeline
ProShare Advisors LLC10,246$114K<0.01%-13113F-HRTimeline
Private Advisor Group, LLC10,180$113K<0.01%-4,40013F-HRTimeline
FMR LLCin group FMR LLC7,025$78K<0.01%-15613F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co6,818$76K<0.01%013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA5,766$64K<0.01%-16,78813F-HRTimelineGroup
State of Wyoming4,936$54.8K0.01%new13F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…4,095$45.5K<0.01%+3,94013F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,527$39.2K<0.01%013F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP3,526$37.3K<0.01%+65513F-HRTimelineGroup
SUMMIT SECURITIES GROUP LLC3,048$33.9K0.02%new13F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK2,304$25.6K<0.01%+31813F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,304$25.6K<0.01%-4,14613F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC2,288$25.4K<0.01%+1,72013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,941$21.6K<0.01%+84413F-HRTimelineGroup
CWM, LLCin group CWM, LLC1,864$20.7K<0.01%-14413F-HRTimelineGroup
Larson Financial Group LLC1,767$19.6K<0.01%+1,12013F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,588$17.6K<0.01%+19113F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,387$15.4K<0.01%-3413F-HRTimelineGroup
Sterling Capital Management LLC1,198$13.3K<0.01%-55113F-HRTimeline
QUADRANT CAPITAL GROUP LLC1,091$12.1K<0.01%+1813F-HR/ATimeline
Strategic Wealth Advisors LLC1,000$11K0.01%013F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …889$9.88K<0.01%+28513F-HRTimelineGroup
C M BIDWELL & ASSOCIATES LTD590$6.55K<0.01%-26313F-HRTimeline
MassMutual Private Wealth & Trust, FSB459$5.1K<0.01%+13913F-HRTimeline
GAMMA Investing LLC438$4.87K<0.01%+13513F-HRTimeline
Farther Finance Advisors, LLC349$3.89K<0.01%+713F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\295$3.28K<0.01%+1813F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.282$3.13K<0.01%+8413F-HR/ATimelineGroup
SIGNATUREFD, LLC239$2.65K<0.01%+19913F-HRTimeline
Truvestments Capital LLC225$2.5K<0.01%new13F-HRTimeline
Parallel Advisors, LLC100$1.11K<0.01%013F-HR/ATimeline
True Wealth Design, LLC88$978<0.01%-713F-HRTimeline
Rachor Investment Advisory Services, LLC25$278<0.01%013F-HRTimeline
MAI Capital Management23$256<0.01%new13F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC20$223<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…12$134<0.01%+713F-HR/ATimelineGroup
Root Financial Partners, LLC11$122<0.01%new13F-HRTimeline
Stone House Investment Management, LLC8$89<0.01%new13F-HRTimeline
IFP Advisors, Inc1$11<0.01%013F-HRTimeline
Hughes Financial Services, LLC1$11<0.01%new13F-HRTimeline
Covestor Ltd8$00%-813F-HRTimelineValue filed as zero, left out of ratios.

Events

  • Narula Sanjeev disposed of 13,485 PHAT shares on 2026-10-06, Form 4 filed 2026-10-08. 0001193125-26-418114

    Accepted , ingested