Vault-13

PHATHOM PHARMACEUTICALS INC PHAT

COM · Common Stock · CUSIP 71722W107 · ISIN US71722W1071

87 institutional holders -7 vs Q3 2022
28,214,35428.2m shares reported held*
67.8% of all shares outstanding*
$316.6mreported value*
9 new 29 added 26 reduced 15 sold out net sold ≈ $22.3m (-2.0m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 41.6m as of 2022-11-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $11.22. Options: 3 managers hold calls ($133.0k notional), 3 hold puts ($123.8k).

Trends to Q4 2022

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 94Q4 22: 8787Q3 22Q4 22
Numbers
QuarterHolders
Q3 202294
Q4 202287

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$500k$1m$1.5m$2mQ3 22 calls: $1.9mQ3 22 puts: $3.0kQ3 22P/C 0.00Q4 22 calls: $133.0kQ4 22 puts: $123.8kQ4 22P/C 0.93
Numbers
QuarterCallsPutsP/C
Q3 2022$1.9m$3.0k0.00
Q4 2022$133.0k$123.8k0.93

Biggest buyers

Opaleye Management Inc. New +417,500+417.5k
Newtyn Management, LLC Added +168,099+168.1k
BlackRock Inc. Added +151,281+151.3k
Walleye Capital LLC New +145,870+145.9k
Invesco Ltd. Added +139,781+139.8k
VANGUARD GROUP INC Added +106,851+106.9k
ROTHSCHILD & CO ASSET MANAGEMENT US INC. Added +38,230+38.2k
GEODE CAPITAL MANAGEMENT, LLC Added +32,752+32.8k
NORTHERN TRUST CORP Added +19,340+19.3k
GSA CAPITAL PARTNERS LLP New +18,517+18.5k

Biggest sellers

DEERFIELD MANAGEMENT COMPANY, L.P. Sold out -2,414,897-2.4m
683 Capital Management, LLC Reduced -313,943-313.9k
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) Sold out -154,093-154.1k
HRT FINANCIAL LP Sold out -52,801-52.8k
MILLENNIUM MANAGEMENT LLC Sold out -50,396-50.4k
Curi Wealth Management, LLC Sold out -45,000-45.0k
JPMORGAN CHASE & CO Reduced -42,221-42.2k
Candriam S.C.A. Reduced -28,678-28.7k
Penn Mutual Asset Management Reduced -24,138-24.1k
MORGAN STANLEY Reduced -23,242-23.2k

Biggest calls

CITADEL ADVISORS LLC Reduced $83.0k7.4k shares
SIMPLEX TRADING, LLC Added $50.0k4.5k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC New $117.8k10.5k shares
SIMPLEX TRADING, LLC Added $6.0k600 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Frazier Life Sciences Public Fund, L.P. 13D · may seek influence no change · filed 2025-11-04
Stated purposeItem 4 is hereby amended to remove references to "FLSPOF" and the "FLSPOF Shares" from the first paragraph. Full filing
8.6% no change 6.0m≈ $64.9m 2025-11-04
BlackRock, Inc. 13G · institution +0.9 pts · filed 2026-07-29 5.5% +0.9 pts 4.4m≈ $47.5m 2026-07-29

Fell to 5% or below in the last year: MILLENNIUM MANAGEMENT LLC (4.2%, 2026-07-20)

Insider purchases and sales in Q4 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q1 21: 0 buyingQ1 21: 0 sellingQ2 21: 0 buyingQ2 21: 0 sellingQ2 21Q3 21: 0 buyingQ3 21: 0 sellingQ4 21: 0 buyingQ4 21: 1 sellingQ4 21Q1 22: 0 buyingQ1 22: 0 sellingQ2 22: 4 buyingQ2 22: 0 sellingQ2 22Q3 22: 0 buyingQ3 22: 0 sellingQ4 22: 0 buyingQ4 22: 2 sellingQ4 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—1$586.3k—
Q1 20220—0——
Q2 20224$415.1k0——
Q3 20220—0——
Q4 20220—2$35.4k—
DateInsiderTradeSharesPrice ValueTheir holding
2022-11-21 Henderson Molly CFO and CBO Sold 2,159 $9.60 $20.7k2.2k shares -5%
2022-11-21 Curran Terrie President and Chief Executive, director Sold 1,526 $9.60 $14.6k1.5k shares -2%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q4 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Frazier Life Sciences Management, L.P. 5.86% of their portfolio PALO ALTO, CA 8,407,1528.4m $94.3m $94.3m 5.86% Unchanged
2 Medicxi Ventures Management (Jersey) Ltd 11.71% of their portfolio ST. HELIER, Y9 2,484,2742.5m $27.9m $27.9m 11.71% Unchanged
3 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 2,207,6492.2m $24.8m $24.8m 0.01% Added +139.8k +139,781
4 Avidity Partners Management LP 0.50% of their portfolio DALLAS, TX 1,900,0001.9m $21.3m $21.3m 0.50% Reduced -6.8k -6,800
5 Ensign Peak Advisors, Inc 0.04% of their portfolio SALT LAKE CITY, UT 1,761,1911.8m $19.8m $19.8m 0.04% Unchanged
6 BlackRock Inc. 0.00% of their portfolio New York, NY 1,694,4311.7m $19.0m $19.0m 0.00% Added +151.3k +151,281
7 Abingworth LLP 5.25% of their portfolio LONDON, X0 1,435,1061.4m $16.1m $16.1m 5.25% Unchanged
8 683 Capital Management, LLC 1.37% of their portfolio NEW YORK, NY 1,350,0001.4m $15.1m $15.1m 1.37% Reduced -313.9k -313,943
9 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 1,076,6051.1m $12.1m $12.1m 0.00% Added +106.9k +106,851
10 GW&K Investment Management, LLC 0.07% of their portfolio BOSTON, MA 594,157594.2k $6.7m $6.7m 0.07% Added +998 +998
11 GILDER GAGNON HOWE & CO LLC 0.12% of their portfolio New York, NY 551,827551.8k $6.2m $6.2m 0.12% Reduced -615 -615
12 Newtyn Management, LLC 1.12% of their portfolio NEW YORK, NY 484,074484.1k $5.4m $5.4m 1.12% Added +168.1k +168,099
13 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 451,349451.3k $5.1m $5.1m 0.00% Added +5.9k +5,854
14 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 435,044435.0k $4.9m $4.9m 0.00% Added +32.8k +32,752
15 StepStone Group LP 0.63% of their portfolio La Jolla, CA 422,085422.1k $4.7m $4.7m 0.63% Unchanged
16 Opaleye Management Inc. 1.63% of their portfolio BOSTON, MA 417,500417.5k $4.7m $4.7m 1.63% New
17 ROTHSCHILD & CO ASSET MANAGEMENT US INC. 0.04% of their portfolio Stamford, CT 245,658245.7k $2.8m $2.8m 0.04% Added +38.2k +38,230
18 Rhenman & Partners Asset Management AB 0.28% of their portfolio Stockholm, V7 235,210235.2k $2.6m $2.6m 0.28% Unchanged
19 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 211,049211.0k $2.4m $2.4m 0.00% Added +19.3k +19,340
20 MPM BIOIMPACT LLC 0.57% of their portfolio BOSTON, MA 195,942195.9k $2.2m $2.2m 0.57% Added +2.6k +2,616
21 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 173,254173.3k $1.9m $1.9m 0.00% Added +16.6k +16,574
22 Walleye Capital LLC 0.04% of their portfolio NEW YORK, NY 145,870145.9k $1.6m $1.6m 0.04% New
23 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 129,149129.1k $1.4m $1.4m 0.00% Reduced -42.2k -42,221
24 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 107,927107.9k $1.2m $1.2m 0.00% Reduced -9.7k -9,652
25 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 97,77997.8k $1.1m $1.1m 0.00% Added +11.1k +11,091
26 Candriam S.C.A. 0.01% of their portfolio STRASSEN, N4 83,35783.4k $935.2k $935.2k 0.01% Reduced -28.7k -28,678
27 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 79,93579.9k $896.9k $896.9k 0.00% Added +6.4k +6,415
28 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 74,01274.0k $830.4k $830.4k 0.00% Added +16.7k +16,670
29 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 69,18869.2k $776.3k $776.3k 0.00% Reduced -23.2k -23,242
30 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 65,46265.5k $734.5k $734.5k 0.00% Reduced -5.3k -5,286
31 Penn Mutual Asset Management 0.79% of their portfolio Conshohocken, PA 62,80262.8k $704.6k $704.6k 0.79% Reduced -24.1k -24,138
32 Hennion & Walsh Asset Management, Inc. 0.04% of their portfolio Parsippany, NJ 59,40659.4k $667.0k $667.0k 0.04% Added +4.7k +4,735
33 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 58,58558.6k $657.3k $657.3k 0.00% Reduced -1.0k -1,004
34 Swiss National Bank 0.00% of their portfolio ZURICH, V8 41,50041.5k $465.6k $465.6k 0.00% Unchanged
35 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 30,73230.7k $345.0k $345.0k 0.00% Added +1.8k +1,805
36 Occidental Asset Management, LLC 0.09% of their portfolio Burlingame, CA 29,67229.7k $332.9k $332.9k 0.09% Unchanged
37 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 26,56726.6k $298.1k $298.1k 0.00% Added +2.7k +2,668
38 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 25,08425.1k $281.4k $281.4k 0.00% Added +864 +864
39 INSPIRION WEALTH ADVISORS, LLC 0.06% of their portfolio LIBERTYVILLE, IL 23,26923.3k $261.1k $261.1k 0.06% Unchanged
40 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 22,50022.5k $252.4k $252.4k 0.00% Added +6.7k +6,700
41 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 20,68320.7k $232.1k $232.1k 0.00% Reduced -10.9k -10,886
42 GSA CAPITAL PARTNERS LLP 0.03% of their portfolio LONDON, X0 18,51718.5k $208.0k $208.0k 0.03% New
43 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 17,19217.2k $192.9k $192.9k 0.00% Added +2.8k +2,816
44 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 15,44515.4k $173.3k $173.3k 0.00% Added +4.6k +4,633
45 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 14,95014.9k $168.0k $168.0k 0.00% Added +315 +315
46 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 14,80014.8k $166.1k $166.1k 0.00% Reduced -9.3k -9,300
47 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 14,60314.6k $163.8k $163.8k 0.00% Reduced -83 -83
48 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 13,26013.3k $148.8k $148.8k 0.00% New
49 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 12,30212.3k $138.0k $138.0k 0.00% Unchanged
50 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 12,29612.3k $138.0k $138.0k 0.00% Reduced -22.1k -22,110
51 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 11,60411.6k $130.2k $130.2k 0.00% Added +671 +671
52 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 11,22811.2k $126.0k $126.0k 0.00% Reduced -4.9k -4,870
53 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 10,84310.8k $121.7k $121.7k 0.00% Added +152 +152
54 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 10,04610.0k $112.7k $112.7k 0.00% New
55 STALEY CAPITAL ADVISERS INC 0.01% of their portfolio PITTSBURGH, PA 10,00010.0k $112.0k $112.0k 0.01% Reduced -10.0k -10,000
56 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 8,8798.9k $99.6k $99.6k 0.00% First filing
57 Legal & General Group Plc 0.00% of their portfolio London, X0 7,4217.4k $83.3k $83.3k 0.00% Unchanged
58 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 4,1394.1k $46.0k $46.0k 0.00% Added +3.9k +3,859
59 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 3,5733.6k $40.0k $40.0k 0.00% Unchanged
60 Quantbot Technologies LP 0.00% of their portfolio NEW YORK, NY 2,9272.9k $32.8k $32.8k 0.00% Reduced -400 -400
61 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 1,7531.8k $19.7k $19.7k 0.00% New
62 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 1,5881.6k $13.9k $13.9k 0.00% Unchanged
63 Metropolitan Life Insurance Co/NY 0.00% of their portfolio New York, NY 1,4021.4k $15.7k $15.7k 0.00% Unchanged
64 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 1,1321.1k $12.7k $12.7k 0.00% Reduced -115 -115
65 U.S. Capital Wealth Advisors, LLC 0.00% of their portfolio AUSTIN, TX 1,0001.0k $11.2k $11.2k 0.00% New
66 HUNTINGTON NATIONAL BANK 0.00% of their portfolio COLUMBUS, OH 925925 $10.4k $10.4k 0.00% Reduced -4 -4
67 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 850850 $10.0k $10.0k 0.00% Unchanged
68 UBS Group AG 0.00% of their portfolio ZURICH, V8 795795 $8.9k $8.9k 0.00% Added +167 +167
69 FMR LLC 0.00% of their portfolio BOSTON, MA 695695 $7.8k $7.8k 0.00% Reduced -520 -520
70 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 486486 $5.0k $5.0k 0.00% Reduced -4.0k -3,965
71 China Universal Asset Management Co., Ltd. 0.00% of their portfolio SHANGHAI, F4 423423 $4.7k $4.7k 0.00% Added +56 +56
72 Cutler Group LLC / CA 0.00% of their portfolio SAN FRANCISCO, CA 400400 $4.0k $4.0k 0.00% Unchanged
73 Tradition Wealth Management, LLC 0.00% of their portfolio EDINA, MN 400400 $4.0k $4.0k 0.00% Unchanged
74 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 349349 $3.9k $3.9k 0.00% Reduced -60 -60
75 QUADRANT CAPITAL GROUP LLC 0.00% of their portfolio CINCINNATI, OH 212212 $2.4k $2.4k 0.00% Unchanged
76 Daiwa Securities Group Inc. 0.00% of their portfolio CHIYODA-KU,TOKYO, M0 167167 $2.0k $2.0k 0.00% Added +75 +75
77 MassMutual Private Wealth & Trust, FSB 0.00% of their portfolio Windsor, CT 160160 $2.0k $2.0k 0.00% Added +132 +132
78 Lindbrook Capital, LLC 0.00% of their portfolio CALABASAS, CA 159159 $1.8k $1.8k 0.00% Reduced -14 -14
79 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 150150 $2.0k $2.0k 0.00% Reduced -400 -400
80 Crewe Advisors LLC 0.00% of their portfolio SALT LAKE CITY, UT 107107 $1.2k $1.2k 0.00% Unchanged
81 NFSG Corp 0.00% of their portfolio BOCA RATON, FL 3535 $393 $393 0.00% Unchanged
82 WHITTIER TRUST CO 0.00% of their portfolio SOUTH PASADENA, CA 3333 $369 $369 0.00% New
83 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 2929 $325 $325 0.00% Unchanged
84 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 2424 $269 $269 0.00% Reduced -192 -192
85 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 1313 $0 $0 0.00% New
86 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 66 $1.0k $1.0k 0.00% Reduced -56 -56
87 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged