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Disclosery

PHAT PHATHOM PHARMACEUTICALS INC

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COMMON STOCK (common), issuer CIK 1783183

154 managers (162 13F filers) reported a position in PHAT shares at 2026-06-30, 72,073,934 shares in all. 21 filers opened a position and 32 filers sold out during the quarter.

Managers
154
13F filers
162
New
21
Added
59
Reduced
50
Sold out
32
Shares held by filers
72,073,934

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

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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$135M2.95%013F-HRTimeline
Medicxi Ventures Management (Jersey) Ltd7,464,572$81M45.65%013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.4,525,129$49.1M<0.01%+463,13313F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.4,029,731$43.7M<0.01%-292,32913F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding3,868,699$42M+214,028Timeline
Carlyle Group Inc.in group Carlyle Group Inc.3,496,808$37.9M0.38%013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC3,375,834$36.6M0.02%-647,07513F-HRTimelineGroup
GW&K Investment Management, LLC2,166,838$23.5M0.18%+745,72913F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources1,970,828$21.4M<0.01%+976,32413F-HRTimelineGroup
NEA Management Company, LLC1,960,169$21.3M1.34%013F-HRTimeline
683 Capital Management, LLCin group 683 Capital Management, LLC1,850,000$20.1M1.85%013F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,778,032$19.3M<0.01%+1,151,83613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,586,323$17.2M<0.01%+199,43313F-HRTimelineGroup
NOMURA ASSET MANAGEMENT CO LTDgroup of 2 filers holding1,502,738$16.3M+297,369Timeline
Catalys Pacific, LLC1,493,854$16.2M7.06%013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,315,687$14.3M<0.01%-12,35813F-HRTimelineGroup
WASATCH ADVISORS LP1,307,247$14.2M0.09%-33,66913F-HRTimeline
Ensign Peak Advisors, Inc1,051,913$11.4M0.02%-575,89313F-HRTimeline
Propel Bio Management, LLC1,050,358$11.4M5.96%+209,08613F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.1,022,193$11.1M0.02%new13F-HRTimelineGroup
SummitTX Capital, L.P.789,550$8.57M0.23%-206,33513F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC709,695$7.7M<0.01%new13F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP666,090$7.23M0.01%-194,60213F-HRTimelineGroup
EcoR1 Capital, LLC625,000$6.78M0.34%013F-HRTimeline
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC532,000$5.77M0.09%-393,00013F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP519,076$5.63M<0.01%+36,94013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP458,301$4.97M<0.01%+43,34513F-HRTimelineGroup
StepStone Group LP422,085$4.58M0.21%013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co419,094$4.55M<0.01%+10,07913F-HRTimelineGroup
Woodline Partners LP369,052$4M0.01%013F-HRTimeline
Hennion & Walsh Asset Management, Inc.327,278$3.55M0.1%+181,34613F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC293,979$3.19M<0.01%+39,76013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO275,251$2.99M<0.01%-12,17913F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding260,361$2.82M-155,798Timeline
Simplify Asset Management Inc.249,267$2.7M0.04%-13,11913F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC226,400$2.46M<0.01%-79,40013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC212,706$2.31M<0.01%new13F-HRTimelineGroup
NewEdge Advisors, LLC203,962$2.21M0.01%+20,96213F-HRTimeline
Avidity Partners Management LP200,000$2.17M0.35%-49,39013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY199,909$2.17M<0.01%+123,22813F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC191,866$2.08M0.02%+165,42113F-HRTimelineGroup
Opaleye Management Inc.185,589$2.01M0.18%new13F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC184,901$2.01M<0.01%-198,15713F-HRTimelineGroup
Trexquant Investment LP173,884$1.89M0.01%-119,42113F-HRTimeline
Jones Hill Capital LP161,486$1.75M0.37%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp152,313$1.65M<0.01%+28,29513F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN152,002$1.65M<0.01%+105,88913F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/151,015$1.64M<0.01%-57,10013F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd135,832$1.47M0.02%-24,66913F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC134,901$1.46M<0.01%+79,43313F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…132,284$1.44M<0.01%+20,53213F-HRTimelineGroup
DIADEMA PARTNERS LP129,950$1.41M0.5%+75,30013F-HRTimeline
Nuveen, LLCin group TIAA127,127$1.38M<0.01%+9,82613F-HRTimelineGroup
Engineers Gate Manager LP118,257$1.28M0.02%+44,40913F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…112,139$1.22M0.28%+54,15313F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…102,754$1.11M<0.01%+17,07113F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP101,745$1.11M<0.01%new13F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.100,000$1.08M0.01%013F-HRTimelineGroup
Swiss National Bank98,800$1.07M<0.01%+6,20013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.95,660$1.04M<0.01%-36,79713F-HRTimelineGroup
GILDER GAGNON HOWE & CO LLC88,134$956K0.01%-51,75513F-HRTimeline
Stonepine Capital Management, LLC85,010$922K0.7%+35,00013F-HR/ATimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …77,316$839K<0.01%new13F-HRTimelineGroup
KBC Group NVin group KBC Group NV77,139$837K<0.01%013F-HRTimelineGroup
Campbell & CO Investment Adviser LLC68,759$746K0.04%+6,73613F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/65,722$714K<0.01%+13,26913F-HRTimeline
Penn Mutual Asset Management62,802$681K3.5%013F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD62,283$676K<0.01%+18,27913F-HRTimeline
RHUMBLINE ADVISERS60,346$655K<0.01%+4,90713F-HRTimeline
Birchview Capital, LP55,000$597K0.28%-140,00013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC52,945$574K<0.01%+23,57613F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP52,832$573K<0.01%-1,20713F-HRTimelineGroup
Creative Planningin group Creative Planning52,750$572K<0.01%-17,44313F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…51,787$562K<0.01%+11,56513F-HR/ATimeline
ALLIANCEBERNSTEIN L.P.49,290$548K<0.01%-10013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\50,205$545K<0.01%+13,74613F-HRTimelineGroup
Pale Fire Capital SEin group Pale Fire Capital49,713$539K0.04%new13F-HRTimelineGroup
Man Group plcin group Man Group plc48,679$528K<0.01%+18,32713F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC48,024$521K<0.01%+21,69613F-HRTimelineGroup
Persistent Asset Partners Ltd47,663$517K0.16%+20,89713F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC42,900$465K0.02%013F-HRTimelineGroup
Quantbot Technologies LP42,755$464K0.02%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC41,777$453K<0.01%+16,42013F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd39,845$432K0.01%new13F-HRTimeline
Fiduciary Trust Coin group Fiduciary Trust Co35,731$388K<0.01%+17,66413F-HRTimelineGroup
ALLSTATE CORPin group ALLSTATE CORP32,875$357K<0.01%+18813F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc32,738$355K<0.01%+70113F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC31,595$343K<0.01%-243,56613F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP30,138$327K0.02%-66,93013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…28,107$305K<0.01%+2,26213F-HRTimelineGroup
Kera Capital Partners, Inc.26,826$291K0.03%013F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding26,214$284K+372Timeline
Zurcher Kantonalbank (Zurich Cantonalba…25,838$280K<0.01%+84613F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC22,535$244K<0.01%-9,69513F-HRTimeline
Summit Financial Wealth Advisors, LLC22,143$240K0.03%013F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…18,731$236K<0.01%new13F-HRTimeline
Jupiter Topco LLCin group Janus Henderson21,500$233K<0.01%13F-HRTimelineGroup
INSPIRION WEALTH ADVISORS, LLC19,914$210K0.02%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding17,725$192K-343,216Timeline
State of Wyoming17,639$191K0.02%+12,70313F-HRTimeline
PROFUND ADVISORS LLC17,277$187K0.01%+79313F-HRTimeline
Jain Global LLC16,437$178K<0.01%-1,82513F-HRTimeline
Police & Firemen's Retirement System of…16,148$175K<0.01%+4,22313F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…15,924$173K<0.01%-7313F-HRTimelineGroup
Pathstone Holdings, LLCin group Pathstone Holdings, LLC15,000$163K<0.01%013F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC14,671$159K<0.01%013F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…14,599$158K<0.01%-80,03913F-HRTimelineGroup
KLP KAPITALFORVALTNING AS14,000$152K<0.01%013F-HRTimeline
GROUP ONE TRADING LLC13,881$151K<0.01%-3,05813F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …13,631$148K<0.01%+72313F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM13,589$147K<0.01%+73213F-HRTimeline
Rafferty Asset Management, LLC12,756$138K<0.01%new13F-HRTimeline
China Universal Asset Management Co., L…12,693$138K0.01%-1,29013F-HRTimeline
TOCQUEVILLE ASSET MANAGEMENT L.P.in group TOCQUEVILLE ASSET MANAGEMENT …12,000$130K<0.01%-23,20013F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC11,388$124K<0.01%+4013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND10,770$117K<0.01%013F-HRTimeline
Allworth Financial LP10,443$113K<0.01%-9713F-HRTimeline
Private Advisor Group, LLC10,180$110K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS8,692$94.3K<0.01%-2,64013F-HRTimelineGroup
FMR LLCin group FMR LLC8,230$89.3K<0.01%+1,20513F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co6,818$74K<0.01%013F-HRTimelineGroup
Fulcrum Asset Management LLP4,458$48.5K<0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,463$48.4K<0.01%+93613F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP4,250$45.6K<0.01%+72413F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…2,628$28.5K<0.01%-1,46713F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,281$24.7K<0.01%-2313F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,258$24K<0.01%-3,50813F-HRTimelineGroup
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK2,176$23.6K<0.01%-12813F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC1,940$21K<0.01%-34813F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,917$20.8K<0.01%-2413F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.1,669$18.1K<0.01%+8113F-HRTimeline
Strategic Wealth Advisors LLC1,000$16K0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,464$15.9K<0.01%+7713F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …896$9.72K<0.01%+713F-HRTimelineGroup
Sterling Capital Management LLC756$8.2K<0.01%-44213F-HRTimeline
Larson Financial Group LLC732$7.94K<0.01%-1,03513F-HRTimeline
Aster Capital Management (DIFC) Ltd508$5.51K<0.01%new13F-HR/ATimeline
MassMutual Private Wealth & Trust, FSB427$4.63K<0.01%-3213F-HRTimeline
GAMMA Investing LLC400$4.34K<0.01%-3813F-HRTimeline
Farther Finance Advisors, LLC342$3.71K<0.01%-713F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\277$3K<0.01%-1813F-HRTimelineGroup
Truvestments Capital LLC225$2.44K<0.01%013F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…218$2.37K<0.01%new13F-HRTimelineGroup
Quarry LP127$1.38K<0.01%new13F-HRTimeline
Parallel Advisors, LLC100$1.08K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.90$976<0.01%-19213F-HRTimelineGroup
True Wealth Design, LLC88$955<0.01%013F-HRTimeline
Silver Grove Financial Group, Inc.81$879<0.01%new13F-HRTimeline
Arax Advisory Partners42$456<0.01%new13F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC20$217<0.01%013F-HRTimeline
Stone House Investment Management, LLC8$87<0.01%013F-HRTimeline
Clearstead Advisors, LLC5$55<0.01%new13F-HRTimeline
Integrated Wealth Concepts LLC4$43<0.01%new13F-HRTimeline
Covestor Ltd29$00%+2113F-HRTimelineValue filed as zero, left out of ratios.