PHAT

Phathom Pharmaceuticals, Inc.

Insider trading activity for Phathom Pharmaceuticals, Inc., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 6 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 12 months

-$7.1K

net selling

Bought(0 · 0 insiders): $0
Sold(1 · 1 insiders): $7.1K

Transaction history

The 75 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Sep 3	Breedlove Robert Charles	Principal Accounting…	FTAX	460	$9.05	$4.2K	-0.8%	Open the original filing on SEC.gov
Jul 14	Breedlove Robert Charles	Principal Accounting…	FTAX	1,555	$11.04	$17.2K	-2.5%	Open the original filing on SEC.gov
May 22	Parikh Asit	Director	GGIFT	28,000	—	—	+23.2%	Open the original filing on SEC.gov
May 22	Parikh Asit	Director	GGIFT	28,000	—	—	-53.7%	Open the original filing on SEC.gov
May 20	Parikh Asit	Director	DTOISS◆	17,500	—	—	—	Open the original filing on SEC.gov
May 20	Parikh Asit	Director	MEXER	17,500	$4.95	$86.6K	+50.5%	Open the original filing on SEC.gov
May 19	Topper James N	Director, 10% Owner	AGRANT	24,122	—	—	+56.6%	Open the original filing on SEC.gov
May 19	Stenhouse Mark	Director	AGRANT	24,122	—	—	+80.4%	Open the original filing on SEC.gov
May 19	Schroeder Theodore R	Director	AGRANT	24,122	—	—	+114.9%	Open the original filing on SEC.gov
May 19	Parikh Asit	Director	AGRANT	24,122	—	—	+229.7%	Open the original filing on SEC.gov
May 19	Karbe Frank	Director	AGRANT	24,122	—	—	+35.7%	Open the original filing on SEC.gov
May 19	Fields Heidi	Director	AGRANT	24,122	—	—	+80.4%	Open the original filing on SEC.gov
May 19	Cola Michael F	Director	AGRANT	24,122	—	—	+60.6%	Open the original filing on SEC.gov
Mar 10	Parikh Asit	Director	GGIFT	40,000	—	—	+49.7%	Open the original filing on SEC.gov
Mar 10	Parikh Asit	Director	GGIFT	40,000	—	—	-79.2%	Open the original filing on SEC.gov
Feb 27	Breedlove Robert Charles	Principal Accounting…	FTAX	414	$12.56	$5.2K	-0.7%	Open the original filing on SEC.gov
Feb 27	Breedlove Robert Charles	Principal Accounting…	FTAX	964	$12.56	$12.1K	-1.5%	Open the original filing on SEC.gov
Feb 27	Breedlove Robert Charles	Principal Accounting…	AGRANT	2,790	—	—	+4.6%	Open the original filing on SEC.gov
Feb 27	Breedlove Robert Charles	Principal Accounting…	AGRANT	13,000	—	—	+27.6%	Open the original filing on SEC.gov
Feb 10	Cook Anne Marie	Chief Legal Off. &…	FTAX	1,535	$12.82	$19.7K	-1.7%	Open the original filing on SEC.gov
Feb 10	Cook Anne Marie	Chief Legal Off. &…	AGRANT	3,461	—	—	+4.0%	Open the original filing on SEC.gov
Feb 10	Basta Steven L	President and CEO	FTAX	6,277	$12.82	$80.5K	-1.7%	Open the original filing on SEC.gov
Feb 10	Basta Steven L	President and CEO	AGRANT	12,362	—	—	+3.4%	Open the original filing on SEC.gov
Jan 23	Parikh Asit	Director	GGIFT	80,500	—	—	—	Open the original filing on SEC.gov
Jan 23	Parikh Asit	Director	GGIFT	80,500	—	—	-61.5%	Open the original filing on SEC.gov
Jan 21	Breedlove Robert Charles	Principal Accounting…	FTAX	776	$13.61	$10.6K	-1.6%	Open the original filing on SEC.gov
Jan 13	Parikh Asit	Director	MEXER◆	8,750	—	—	—	Open the original filing on SEC.gov
Jan 13	Parikh Asit	Director	MEXER	8,750	$10.30	$90.1K	+7.2%	Open the original filing on SEC.gov
Jan 2	Narula Sanjeev	Chief Financial & Bus.…	AGRANT◆	42,848	—	—	—	Open the original filing on SEC.gov
Jan 2	Narula Sanjeev	Chief Financial & Bus.…	AGRANT	82,715	—	—	+57.4%	Open the original filing on SEC.gov
Jan 2	Cook Anne Marie	Chief Legal Off. &…	AGRANT◆	67,878	—	—	—	Open the original filing on SEC.gov
Jan 2	Cook Anne Marie	Chief Legal Off. &…	AGRANT	75,345	—	—	+779.4%	Open the original filing on SEC.gov
Jan 2	Basta Steven L	President and CEO	AGRANT◆	226,156	—	—	—	Open the original filing on SEC.gov
Jan 2	Basta Steven L	President and CEO	AGRANT	251,034	—	—	+220.6%	Open the original filing on SEC.gov
Dec 19, 2025	Parikh Asit	Director	MEXER◆	8,750	—	—	—	Open the original filing on SEC.gov
Dec 19, 2025	Parikh Asit	Director	MEXER	8,750	$10.30	$90.1K	+7.7%	Open the original filing on SEC.gov
Dec 18, 2025	Breedlove Robert Charles	Principal Accounting…	FTAX	230	$16.28	$3.7K	-0.5%	Open the original filing on SEC.gov
Dec 17, 2025	Cook Anne Marie	Chief Legal Off. &…	FTAX	7,703	$15.36	$118.3K	-44.4%	Open the original filing on SEC.gov
Dec 17, 2025	Cook Anne Marie	Chief Legal Off. &…	AGRANT	17,370	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Basta Steven L	President and CEO	FTAX	31,502	$15.36	$483.9K	-21.7%	Open the original filing on SEC.gov
Dec 17, 2025	Basta Steven L	President and CEO	AGRANT	62,038	—	—	+74.5%	Open the original filing on SEC.gov
Nov 28, 2025	Basta Steven L	President and CEO	MEXER◆	90,000	—	—	—	Open the original filing on SEC.gov
Nov 28, 2025	Basta Steven L	President and CEO	FTAX	48,375	$15.62	$755.6K	-36.8%	Open the original filing on SEC.gov
Nov 28, 2025	Basta Steven L	President and CEO	MEXER	90,000	—	—	+216.2%	Open the original filing on SEC.gov
Nov 3, 2025	Breedlove Robert Charles	Principal Accounting…	SSELL	524	$13.51	$7.1K	-1.1%	Open the original filing on SEC.gov
Oct 6, 2025	Narula Sanjeev	Chief Financial & Bus.…	AGRANT↺	144,000	—	—	—	Open the original filing on SEC.gov
Sep 25, 2025	Basta Steven L	President and CEO	MEXER◆	90,000	—	—	—	Open the original filing on SEC.gov
Sep 25, 2025	Basta Steven L	President and CEO	FTAX	48,375	$11.66	$564.1K	-53.8%	Open the original filing on SEC.gov
Sep 25, 2025	Basta Steven L	President and CEO	MEXER	90,000	—	—	—	Open the original filing on SEC.gov
Sep 5, 2025	Breedlove Robert Charles	Principal Accounting…	SSELL	461	$12.09	$5.6K	-0.9%	Open the original filing on SEC.gov
Jul 16, 2025	Breedlove Robert Charles	Principal Accounting…	SSELL	1,692	$8.36	$14.2K	-3.4%	Open the original filing on SEC.gov
Jun 23, 2025	Cook Anne Marie	Chief Legal Off. &…	AGRANT◆	210,000	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Topper James N	Director, 10% Owner	AGRANT◆	17,500	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Topper James N	Director, 10% Owner	AGRANT	10,500	—	—	+32.7%	Open the original filing on SEC.gov
Jun 3, 2025	Stenhouse Mark	Director	AGRANT◆	17,500	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Stenhouse Mark	Director	AGRANT	10,500	—	—	+53.8%	Open the original filing on SEC.gov
Jun 3, 2025	Parikh Asit	Director	AGRANT◆	17,500	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Parikh Asit	Director	AGRANT	10,500	—	—	+10.2%	Open the original filing on SEC.gov
Jun 3, 2025	Karbe Frank	Director	AGRANT◆	17,500	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Karbe Frank	Director	AGRANT	10,500	—	—	+18.4%	Open the original filing on SEC.gov
Jun 3, 2025	Fields Heidi	Director	AGRANT◆	17,500	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Fields Heidi	Director	AGRANT	10,500	—	—	+53.8%	Open the original filing on SEC.gov
Jun 3, 2025	Cola Michael F	Director	AGRANT◆	17,500	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Cola Michael F	Director	AGRANT	10,500	—	—	+35.8%	Open the original filing on SEC.gov
May 21, 2025	Topper James N	Director	PBUY	3,780	$3.86	$14.6K	+6.8%	Open the original filing on SEC.gov
May 19, 2025	Breedlove Robert Charles	Principal Accounting…	AGRANT◆	33,000	—	—	—	Open the original filing on SEC.gov
May 14, 2025	Topper James N	Director	PBUY	6,300	$3.32	$20.9K	+12.8%	Open the original filing on SEC.gov
May 13, 2025	Topper James N	Director	PBUY	1,120	$3.16	$3.5K	+2.3%	Open the original filing on SEC.gov
May 12, 2025	Topper James N	Director	PBUY↓	12,601	$3.04	$38.3K	+35.4%	Open the original filing on SEC.gov
May 9, 2025	Topper James N	Director	PBUY	2,226	$3.62	$8.1K	+6.7%	Open the original filing on SEC.gov
May 9, 2025	Topper James N	Director	PBUY	33,376	$3.19	$106.6K	—	Open the original filing on SEC.gov
May 7, 2025	Parikh Asit	Director	PBUY	5,000	$2.40	$12K	+5.5%	Open the original filing on SEC.gov
May 6, 2025	Parikh Asit	Director	PBUY	5,000	$2.60	$13K	+5.9%	Open the original filing on SEC.gov
Apr 16, 2025	Schroeder Theodore R	Director	AGRANT◆	35,000	—	—	—	Open the original filing on SEC.gov
Apr 16, 2025	Schroeder Theodore R	Director	AGRANT	21,000	—	—	—	Open the original filing on SEC.gov

FTAX$4.2K

Breedlove Robert Charles · Principal Accounti…Sep 3

460 sh @ $9.05 · -0.8% own

FTAX$17.2K

Breedlove Robert Charles · Principal Accounti…Jul 14

1,555 sh @ $11.04 · -2.5% own

GGIFT—

Parikh Asit · DirectorMay 22

28,000 sh · +23.2% own

GGIFT—

Parikh Asit · DirectorMay 22

28,000 sh · -53.7% own

DTOISS◆—

Parikh Asit · DirectorMay 20

17,500 sh

MEXER$86.6K

Parikh Asit · DirectorMay 20

17,500 sh @ $4.95 · +50.5% own

AGRANT—

Topper James N · Director, 10%…May 19

24,122 sh · +56.6% own

AGRANT—

Stenhouse Mark · DirectorMay 19

24,122 sh · +80.4% own

AGRANT—

Schroeder Theodore R · DirectorMay 19

24,122 sh · +114.9% own

AGRANT—

Parikh Asit · DirectorMay 19

24,122 sh · +229.7% own

AGRANT—

Karbe Frank · DirectorMay 19

24,122 sh · +35.7% own

AGRANT—

Fields Heidi · DirectorMay 19

24,122 sh · +80.4% own

AGRANT—

Cola Michael F · DirectorMay 19

24,122 sh · +60.6% own

GGIFT—

Parikh Asit · DirectorMar 10

40,000 sh · +49.7% own

GGIFT—

Parikh Asit · DirectorMar 10

40,000 sh · -79.2% own

FTAX$5.2K

Breedlove Robert Charles · Principal Accounti…Feb 27

414 sh @ $12.56 · -0.7% own

FTAX$12.1K

Breedlove Robert Charles · Principal Accounti…Feb 27

964 sh @ $12.56 · -1.5% own

AGRANT—

Breedlove Robert Charles · Principal Accounti…Feb 27

2,790 sh · +4.6% own

AGRANT—

Breedlove Robert Charles · Principal Accounti…Feb 27

13,000 sh · +27.6% own

FTAX$19.7K

Cook Anne Marie · Chief Legal Off.…Feb 10

1,535 sh @ $12.82 · -1.7% own

AGRANT—

Cook Anne Marie · Chief Legal Off.…Feb 10

3,461 sh · +4.0% own

FTAX$80.5K

Basta Steven L · President and CEOFeb 10

6,277 sh @ $12.82 · -1.7% own

AGRANT—

Basta Steven L · President and CEOFeb 10

12,362 sh · +3.4% own

GGIFT—

Parikh Asit · DirectorJan 23

80,500 sh

GGIFT—

Parikh Asit · DirectorJan 23

80,500 sh · -61.5% own

FTAX$10.6K

Breedlove Robert Charles · Principal Accounti…Jan 21

776 sh @ $13.61 · -1.6% own

MEXER◆—

Parikh Asit · DirectorJan 13

8,750 sh

MEXER$90.1K

Parikh Asit · DirectorJan 13

8,750 sh @ $10.30 · +7.2% own

AGRANT◆—

Narula Sanjeev · Chief Financial &…Jan 2

42,848 sh

AGRANT—

Narula Sanjeev · Chief Financial &…Jan 2

82,715 sh · +57.4% own

AGRANT◆—

Cook Anne Marie · Chief Legal Off.…Jan 2

67,878 sh

AGRANT—

Cook Anne Marie · Chief Legal Off.…Jan 2

75,345 sh · +779.4% own

AGRANT◆—

Basta Steven L · President and CEOJan 2

226,156 sh

AGRANT—

Basta Steven L · President and CEOJan 2

251,034 sh · +220.6% own

MEXER◆—

Parikh Asit · DirectorDec 19, 2025

8,750 sh

MEXER$90.1K

Parikh Asit · DirectorDec 19, 2025

8,750 sh @ $10.30 · +7.7% own

FTAX$3.7K

Breedlove Robert Charles · Principal Accounti…Dec 18, 2025

230 sh @ $16.28 · -0.5% own

FTAX$118.3K

Cook Anne Marie · Chief Legal Off.…Dec 17, 2025

7,703 sh @ $15.36 · -44.4% own

AGRANT—

Cook Anne Marie · Chief Legal Off.…Dec 17, 2025

17,370 sh

FTAX$483.9K

Basta Steven L · President and CEODec 17, 2025

31,502 sh @ $15.36 · -21.7% own

AGRANT—

Basta Steven L · President and CEODec 17, 2025

62,038 sh · +74.5% own

MEXER◆—

Basta Steven L · President and CEONov 28, 2025

90,000 sh

FTAX$755.6K

Basta Steven L · President and CEONov 28, 2025

48,375 sh @ $15.62 · -36.8% own

MEXER—

Basta Steven L · President and CEONov 28, 2025

90,000 sh · +216.2% own

SSELL$7.1K

Breedlove Robert Charles · Principal Accounti…Nov 3, 2025

524 sh @ $13.51 · -1.1% own

AGRANT↺—

Narula Sanjeev · Chief Financial &…Oct 6, 2025

144,000 sh

MEXER◆—

Basta Steven L · President and CEOSep 25, 2025

90,000 sh

FTAX$564.1K

Basta Steven L · President and CEOSep 25, 2025

48,375 sh @ $11.66 · -53.8% own

MEXER—

Basta Steven L · President and CEOSep 25, 2025

90,000 sh

SSELL$5.6K

Breedlove Robert Charles · Principal Accounti…Sep 5, 2025

461 sh @ $12.09 · -0.9% own

SSELL$14.2K

Breedlove Robert Charles · Principal Accounti…Jul 16, 2025

1,692 sh @ $8.36 · -3.4% own

AGRANT◆—

Cook Anne Marie · Chief Legal Off.…Jun 23, 2025

210,000 sh

AGRANT◆—

Topper James N · Director, 10%…Jun 3, 2025

17,500 sh

AGRANT—

Topper James N · Director, 10%…Jun 3, 2025

10,500 sh · +32.7% own

AGRANT◆—

Stenhouse Mark · DirectorJun 3, 2025

17,500 sh

AGRANT—

Stenhouse Mark · DirectorJun 3, 2025

10,500 sh · +53.8% own

AGRANT◆—

Parikh Asit · DirectorJun 3, 2025

17,500 sh

AGRANT—

Parikh Asit · DirectorJun 3, 2025

10,500 sh · +10.2% own

AGRANT◆—

Karbe Frank · DirectorJun 3, 2025

17,500 sh

AGRANT—

Karbe Frank · DirectorJun 3, 2025

10,500 sh · +18.4% own

AGRANT◆—

Fields Heidi · DirectorJun 3, 2025

17,500 sh

AGRANT—

Fields Heidi · DirectorJun 3, 2025

10,500 sh · +53.8% own

AGRANT◆—

Cola Michael F · DirectorJun 3, 2025

17,500 sh

AGRANT—

Cola Michael F · DirectorJun 3, 2025

10,500 sh · +35.8% own

PBUY$14.6K

Topper James N · DirectorMay 21, 2025

3,780 sh @ $3.86 · +6.8% own

AGRANT◆—

Breedlove Robert Charles · Principal Accounti…May 19, 2025

33,000 sh

PBUY$20.9K

Topper James N · DirectorMay 14, 2025

6,300 sh @ $3.32 · +12.8% own

PBUY$3.5K

Topper James N · DirectorMay 13, 2025

1,120 sh @ $3.16 · +2.3% own

PBUY↓$38.3K

Topper James N · DirectorMay 12, 2025

12,601 sh @ $3.04 · +35.4% own

PBUY$8.1K

Topper James N · DirectorMay 9, 2025

2,226 sh @ $3.62 · +6.7% own

PBUY$106.6K

Topper James N · DirectorMay 9, 2025

33,376 sh @ $3.19

PBUY$12K

Parikh Asit · DirectorMay 7, 2025

5,000 sh @ $2.40 · +5.5% own

PBUY$13K

Parikh Asit · DirectorMay 6, 2025

5,000 sh @ $2.60 · +5.9% own

AGRANT◆—

Schroeder Theodore R · DirectorApr 16, 2025

35,000 sh

AGRANT—

Schroeder Theodore R · DirectorApr 16, 2025

21,000 sh

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 38 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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