Phathom Pharmaceuticals, Inc.

PHATNASDAQ

$6.70-0.22 (-3.18% today)

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

Phathom Pharmaceuticals, Inc. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (-42.3%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Frazier Life Sciences Management, L.P.	15.57%	$135M	2.95%	Not reported
Medicxi Ventures Management (Jersey) Ltd	9.32%	$81M	45.65%	Not reported
BlackRock, Inc.	5.65%	$49.1M	0.00%	Not reported
Invesco Ltd.	5.03%	$43.7M	0.00%	Not reported
Carlyle Group Inc.	4.37%	$37.9M	0.38%	Not reported
Millennium Management LLC	4.22%	$36.6M	0.01%	Not reported
Vanguard Capital Management LLC	3.32%	$28.8M	0.00%	Not reported
GW&K Investment Management, LLC	2.71%	$23.5M	0.18%	Not reported
NEA Management Company, LLC	2.45%	$21.3M	1.34%	Not reported
683 Capital Management, LLC	2.31%	$20.1M	0.99%	Not reported
Goldman Sachs Group Inc	2.22%	$19.3M	0.00%	Not reported
State Street Corp	1.98%	$17.2M	0.00%	Not reported
Catalys Pacific, LLC	1.87%	$16.2M	7.06%	Not reported
Nomura Asset Management International Inc.	1.83%	$15.9M	0.02%	Add 21.35%
Geode Capital Management, LLC	1.64%	$14.3M	0.00%	Not reported
Wasatch Advisors LP	1.63%	$14.2M	0.09%	Reduce 2.51%
Ensign Peak Advisors, Inc	1.31%	$11.4M	0.02%	Reduce 35.38%
Propel Bio Management, LLC	1.31%	$11.4M	5.96%	Add 24.85%
Point72 Asset Management, L.P.	1.28%	$11.1M	0.01%	Not reported
Vanguard Portfolio Management LLC	0.99%	$8.64M	0.00%	Not reported
SummitTX Capital, L.P.	0.99%	$8.57M	0.22%	Reduce 20.72%
Marshall Wace, LLP	0.83%	$7.23M	0.01%	Not reported
EcoR1 Capital, LLC	0.78%	$6.78M	0.33%	Not reported
Perceptive Advisors LLC	0.66%	$5.77M	0.09%	Reduce 42.49%
Two Sigma Investments, LP	0.65%	$5.63M	0.00%	Not reported
Northern Trust Corp	0.57%	$4.97M	0.00%	Not reported
StepStone Group LP	0.53%	$4.58M	0.21%	Not reported
Charles Schwab Investment Management Inc	0.52%	$4.55M	0.00%	Not reported
Woodline Partners LP	0.46%	$4M	0.01%	Not reported
Vanguard Fiduciary Trust Co	0.44%	$3.85M	0.00%	Not reported
Hennion & Walsh Asset Management, Inc.	0.41%	$3.55M	0.10%	Add 124.27%
Ameriprise Financial Inc	0.37%	$3.19M	0.00%	Not reported
JPMorgan Chase & Co	0.34%	$2.99M	0.00%	Not reported
Simplify Asset Management Inc.	0.31%	$2.7M	0.04%	Reduce 5.00%
Renaissance Technologies LLC	0.28%	$2.46M	0.00%	Not reported
Jane Street Group, LLC	0.27%	$2.31M	0.00%	Not reported
UBS Group AG	0.26%	$2.22M	0.00%	Not reported
NewEdge Advisors, LLC	0.25%	$2.21M	0.01%	Not reported
Avidity Partners Management LP	0.25%	$2.17M	0.35%	Reduce 59.90%
Morgan Stanley	0.25%	$2.17M	0.00%	Not reported
Jump Financial, LLC	0.24%	$2.08M	0.02%	Not reported
Opaleye Management Inc.	0.23%	$2.01M	0.18%	New Not reported
Citadel Advisors LLC	0.23%	$2.01M	0.00%	Not reported
Trexquant Investment LP	0.22%	$1.89M	0.01%	Not reported
Jones Hill Capital LP	0.20%	$1.75M	0.37%	New Not reported
Bank of New York Mellon Corp	0.19%	$1.65M	0.00%	Not reported
Wells Fargo & Company	0.19%	$1.65M	0.00%	Not reported
Bank of America Corp	0.19%	$1.64M	0.00%	Not reported
XTX Topco Ltd	0.17%	$1.47M	0.02%	Not reported
AQR Capital Management LLC	0.17%	$1.46M	0.00%	Not reported

50 of 151 holders

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