TRML

Tourmaline Bio, Inc.

Insider trading activity for Tourmaline Bio, 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

net buying

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

Transaction history

The 59 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
Oct 28, 2025	Thiara Parvinder	Director	DTOISS◆	16,800	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Thiara Parvinder	Director	DTOISS◆	10,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Thiara Parvinder	Director	DTOISS◆	10,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Thiara Parvinder	Director	UTENDR	83,782	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Srivastava Sapna	Director	DTOISS◆	16,800	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Srivastava Sapna	Director	DTOISS◆	10,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Srivastava Sapna	Director	DTOISS◆	20,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Srivastava Sapna	Director	UTENDR	518	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Siegall Clay B	Director	DTOISS◆	16,800	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Siegall Clay B	Director	DTOISS◆	15,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Siegall Clay B	Director	DTOISS◆	20,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Robinson Ryan F.	CFO	DTOISS◆	58,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Robinson Ryan F.	CFO	DTOISS◆	76,400	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Robinson Ryan F.	CFO	DTOISS◆	16,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Robinson Ryan F.	CFO	DTOISS◆	25,845	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Robinson Ryan F.	CFO	UTENDR	14,366	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Middlekauff W Bradford	CBO, GC and Secretary	DTOISS◆	58,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Middlekauff W Bradford	CBO, GC and Secretary	DTOISS◆	46,774	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Middlekauff W Bradford	CBO, GC and Secretary	DTOISS◆	124,991	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Middlekauff W Bradford	CBO, GC and Secretary	DTOISS	8,213	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Middlekauff W Bradford	CBO, GC and Secretary	UTENDR	60,988	—	—	-88.1%	Open the original filing on SEC.gov
Oct 28, 2025	McDade Mark	Director	DTOISS◆	16,800	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	McDade Mark	Director	DTOISS◆	10,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	McDade Mark	Director	DTOISS◆	20,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	McDade Mark	Director	UTENDR	448,431	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	McDade Mark	Director	UTENDR	110,083	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	McDade Mark	Director	UTENDR	183,177	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	McDade Mark	Director	UTENDR	518	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Kulkarni Sandeep…	CEO	DTOISS◆	226,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Kulkarni Sandeep…	CEO	DTOISS◆	254,207	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Kulkarni Sandeep…	CEO	DTOISS◆	503,478	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Kulkarni Sandeep…	CEO	UTENDR	7,000	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Kulkarni Sandeep…	CEO	DTOISS	30,387	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Kulkarni Sandeep…	CEO	UTENDR	724,664	—	—	-96.0%	Open the original filing on SEC.gov
Oct 28, 2025	Kantoff Aaron	Director	DTOISS◆	16,800	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Kantoff Aaron	Director	DTOISS◆	10,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Kantoff Aaron	Director	UTENDR	88,281	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Jones Susan Dana	Chief Technology Officer	DTOISS◆	58,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Jones Susan Dana	Chief Technology Officer	DTOISS◆	46,774	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Jones Susan Dana	Chief Technology Officer	DTOISS◆	76,219	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Jones Susan Dana	Chief Technology Officer	DTOISS	3,152	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Jones Susan Dana	Chief Technology Officer	UTENDR	19,782	—	—	-86.3%	Open the original filing on SEC.gov
Oct 28, 2025	Johnson Kevin Bruce	Chief Regulatory Officer	DTOISS◆	58,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Johnson Kevin Bruce	Chief Regulatory Officer	DTOISS◆	46,774	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Johnson Kevin Bruce	Chief Regulatory Officer	DTOISS◆	96,146	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Johnson Kevin Bruce	Chief Regulatory Officer	DTOISS	11,046	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Johnson Kevin Bruce	Chief Regulatory Officer	UTENDR	40,538	—	—	-78.6%	Open the original filing on SEC.gov
Oct 28, 2025	Castelein Caley	Director	DTOISS◆	16,800	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Castelein Caley	Director	DTOISS◆	10,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Castelein Caley	Director	DTOISS◆	10,000	—	—	—	Open the original filing on SEC.gov
Oct 28, 2025	Castelein Caley	Director	UTENDR	431,939	—	—	-100.0%	Open the original filing on SEC.gov
Oct 28, 2025	Castelein Caley	Director	UTENDR	515,997	—	—	-100.0%	Open the original filing on SEC.gov
Oct 24, 2025	Kantoff Aaron	Director	GGIFT	5,000	—	—	-5.4%	Open the original filing on SEC.gov
Oct 22, 2025	Robinson Ryan F.	CFO	MEXER◆	14,366	—	—	—	Open the original filing on SEC.gov
Oct 22, 2025	Robinson Ryan F.	CFO	MEXER	14,366	$13.92	$200K	—	Open the original filing on SEC.gov
Oct 22, 2025	Kulkarni Sandeep…	CEO	MEXER◆	25,316	—	—	—	Open the original filing on SEC.gov
Oct 22, 2025	Kulkarni Sandeep…	CEO	MEXER	25,316	$7.90	$200K	+3.5%	Open the original filing on SEC.gov
Oct 15, 2025	Johnson Kevin Bruce	Chief Regulatory Officer	GGIFT	6,250	—	—	-10.8%	Open the original filing on SEC.gov
Oct 15, 2025	Castelein Caley	Director	GGIFT	522	—	—	-0.1%	Open the original filing on SEC.gov

DTOISS◆—

Thiara Parvinder · DirectorOct 28, 2025

16,800 sh

DTOISS◆—

Thiara Parvinder · DirectorOct 28, 2025

10,000 sh

DTOISS◆—

Thiara Parvinder · DirectorOct 28, 2025

10,000 sh

UTENDR—

Thiara Parvinder · DirectorOct 28, 2025

83,782 sh · -100.0% own

DTOISS◆—

Srivastava Sapna · DirectorOct 28, 2025

16,800 sh

DTOISS◆—

Srivastava Sapna · DirectorOct 28, 2025

10,000 sh

DTOISS◆—

Srivastava Sapna · DirectorOct 28, 2025

20,000 sh

UTENDR—

Srivastava Sapna · DirectorOct 28, 2025

518 sh · -100.0% own

DTOISS◆—

Siegall Clay B · DirectorOct 28, 2025

16,800 sh

DTOISS◆—

Siegall Clay B · DirectorOct 28, 2025

15,000 sh

DTOISS◆—

Siegall Clay B · DirectorOct 28, 2025

20,000 sh

DTOISS◆—

Robinson Ryan F. · CFOOct 28, 2025

58,000 sh

DTOISS◆—

Robinson Ryan F. · CFOOct 28, 2025

76,400 sh

DTOISS◆—

Robinson Ryan F. · CFOOct 28, 2025

16,000 sh

DTOISS◆—

Robinson Ryan F. · CFOOct 28, 2025

25,845 sh

UTENDR—

Robinson Ryan F. · CFOOct 28, 2025

14,366 sh · -100.0% own

DTOISS◆—

Middlekauff W Bradford · CBO, GC and…Oct 28, 2025

58,000 sh

DTOISS◆—

Middlekauff W Bradford · CBO, GC and…Oct 28, 2025

46,774 sh

DTOISS◆—

Middlekauff W Bradford · CBO, GC and…Oct 28, 2025

124,991 sh

DTOISS—

Middlekauff W Bradford · CBO, GC and…Oct 28, 2025

8,213 sh · -100.0% own

UTENDR—

Middlekauff W Bradford · CBO, GC and…Oct 28, 2025

60,988 sh · -88.1% own

DTOISS◆—

McDade Mark · DirectorOct 28, 2025

16,800 sh

DTOISS◆—

McDade Mark · DirectorOct 28, 2025

10,000 sh

DTOISS◆—

McDade Mark · DirectorOct 28, 2025

20,000 sh

UTENDR—

McDade Mark · DirectorOct 28, 2025

448,431 sh · -100.0% own

UTENDR—

McDade Mark · DirectorOct 28, 2025

110,083 sh · -100.0% own

UTENDR—

McDade Mark · DirectorOct 28, 2025

183,177 sh · -100.0% own

UTENDR—

McDade Mark · DirectorOct 28, 2025

518 sh · -100.0% own

DTOISS◆—

Kulkarni Sandeep… · CEOOct 28, 2025

226,000 sh

DTOISS◆—

Kulkarni Sandeep… · CEOOct 28, 2025

254,207 sh

DTOISS◆—

Kulkarni Sandeep… · CEOOct 28, 2025

503,478 sh

UTENDR—

Kulkarni Sandeep… · CEOOct 28, 2025

7,000 sh · -100.0% own

DTOISS—

Kulkarni Sandeep… · CEOOct 28, 2025

30,387 sh · -100.0% own

UTENDR—

Kulkarni Sandeep… · CEOOct 28, 2025

724,664 sh · -96.0% own

DTOISS◆—

Kantoff Aaron · DirectorOct 28, 2025

16,800 sh

DTOISS◆—

Kantoff Aaron · DirectorOct 28, 2025

10,000 sh

UTENDR—

Kantoff Aaron · DirectorOct 28, 2025

88,281 sh · -100.0% own

DTOISS◆—

Jones Susan Dana · Chief Technology…Oct 28, 2025

58,000 sh

DTOISS◆—

Jones Susan Dana · Chief Technology…Oct 28, 2025

46,774 sh

DTOISS◆—

Jones Susan Dana · Chief Technology…Oct 28, 2025

76,219 sh

DTOISS—

Jones Susan Dana · Chief Technology…Oct 28, 2025

3,152 sh · -100.0% own

UTENDR—

Jones Susan Dana · Chief Technology…Oct 28, 2025

19,782 sh · -86.3% own

DTOISS◆—

Johnson Kevin Bruce · Chief Regulatory…Oct 28, 2025

58,000 sh

DTOISS◆—

Johnson Kevin Bruce · Chief Regulatory…Oct 28, 2025

46,774 sh

DTOISS◆—

Johnson Kevin Bruce · Chief Regulatory…Oct 28, 2025

96,146 sh

DTOISS—

Johnson Kevin Bruce · Chief Regulatory…Oct 28, 2025

11,046 sh · -100.0% own

UTENDR—

Johnson Kevin Bruce · Chief Regulatory…Oct 28, 2025

40,538 sh · -78.6% own

DTOISS◆—

Castelein Caley · DirectorOct 28, 2025

16,800 sh

DTOISS◆—

Castelein Caley · DirectorOct 28, 2025

10,000 sh

DTOISS◆—

Castelein Caley · DirectorOct 28, 2025

10,000 sh

UTENDR—

Castelein Caley · DirectorOct 28, 2025

431,939 sh · -100.0% own

UTENDR—

Castelein Caley · DirectorOct 28, 2025

515,997 sh · -100.0% own

GGIFT—

Kantoff Aaron · DirectorOct 24, 2025

5,000 sh · -5.4% own

MEXER◆—

Robinson Ryan F. · CFOOct 22, 2025

14,366 sh

MEXER$200K

Robinson Ryan F. · CFOOct 22, 2025

14,366 sh @ $13.92

MEXER◆—

Kulkarni Sandeep… · CEOOct 22, 2025

25,316 sh

MEXER$200K

Kulkarni Sandeep… · CEOOct 22, 2025

25,316 sh @ $7.90 · +3.5% own

GGIFT—

Johnson Kevin Bruce · Chief Regulatory…Oct 15, 2025

6,250 sh · -10.8% own

GGIFT—

Castelein Caley · DirectorOct 15, 2025

522 sh · -0.1% own

Filing record

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

All 4 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.