Tourmaline Bio, Inc.
Tourmaline Bio, Inc. (TRML) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · TRML · as of Jun 8, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
0
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
Tourmaline Bio, Inc. insiders have shown mixed buying and selling activity over the past 12 Months.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
TRML insider buying and selling by quarter
TRML insider selling · TRML insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · TRML ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
TRML executive sell shares · TRML board member insider trading · TRML insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Oct 28, 2025 | Thiara Parvinder Director | Other | 83,782 | $4.02M⚡ | Form 4 |
| Oct 28, 2025 | Srivastava Sapna Director | Other | 518 | $25K | Form 4 |
| Oct 28, 2025 | MCDADE MARK Director | Other | 448,431 | $21.52M⚡ | Form 4 |
| Oct 28, 2025 | KANTOFF AARON Director | Other | 88,281 | $4.24M⚡ | Form 4 |
| Oct 28, 2025 | Castelein Caley Director | Other | 431,939 | $20.73M⚡ | Form 4 |
| Oct 28, 2025 | Johnson Kevin Bruce Chief Regulatory Officer | Other | 40,538 | $1.95M⚡ | Form 4 |
| Oct 28, 2025 | Johnson Kevin Bruce Chief Regulatory Officer | Other | 11,046 | — | Form 4 |
| Oct 28, 2025 | Jones Susan Dana CTO | Other | 19,782 | $950K | Form 4 |
| Oct 28, 2025 | Jones Susan Dana CTO | Other | 3,152 | — | Form 4 |
| Oct 28, 2025 | MIDDLEKAUFF W BRADFORD CBO, GC and Secretary | Other | 60,988 | $2.93M⚡ | Form 4 |
| Oct 28, 2025 | MIDDLEKAUFF W BRADFORD CBO, GC and Secretary | Other | 8,213 | — | Form 4 |
| Oct 28, 2025 | Robinson Ryan F. CFO | Other | 14,366 | $690K | Form 4 |
| Oct 28, 2025 | Kulkarni Sandeep Chidambar CEO · Director | Other | 724,664 | $34.78M⚡ | Form 4 |
| Oct 28, 2025 | Kulkarni Sandeep Chidambar CEO · Director | Other | 30,387 | — | Form 4 |
| Oct 28, 2025 | Kulkarni Sandeep Chidambar CEO · Director | Other | 7,000 | $336K | Form 4 |
| Oct 24, 2025 | KANTOFF AARON Director | Gift | 5,000 | — | Form 4 |
| Oct 22, 2025 | Robinson Ryan F. CFO | Option | 14,366 | $200K | Form 4 |
| Oct 22, 2025 | Kulkarni Sandeep Chidambar CEO · Director | Option | 25,316 | $200K | Form 4 |
| Oct 15, 2025 | Castelein Caley Director | Gift | 522 | — | Form 4 |
| Oct 15, 2025 | Johnson Kevin Bruce Chief Regulatory Officer | Gift | 6,250 | — | Form 4 |
| Sep 5, 2025 | KANTOFF AARON Director | Option | 10,000 | $95K | Form 4 |
| Sep 5, 2025 | KANTOFF AARON Director | Option | 37,890 | $5K | Form 4 |
| Aug 21, 2024 | Kulkarni Sandeep Chidambar CEO · Director | Purchase | 1,779 | $26K | Form 4 |
| Aug 16, 2024 | Kulkarni Sandeep Chidambar CEO · Director | Purchase | 5,221 | $72K | Form 4 |
| Jan 29, 2024 | MCDADE MARK Director | Purchase | 100,000 | $3.25M⚡ | Form 4 |
Johnson Kevin Bruce
Chief Regulatory Officer
Date
Oct 28
Shares
40,538
Price
$48.00
Value
$1.95M ⚡
Johnson Kevin Bruce
Chief Regulatory Officer
Date
Oct 28
Shares
11,046
Price
—
Value
—
MIDDLEKAUFF W BRADFORD
CBO, GC and Secretary
Date
Oct 28
Shares
60,988
Price
$48.00
Value
$2.93M ⚡
MIDDLEKAUFF W BRADFORD
CBO, GC and Secretary
Date
Oct 28
Shares
8,213
Price
—
Value
—
Kulkarni Sandeep Chidambar
CEO · Director
Date
Oct 28
Shares
724,664
Price
$48.00
Value
$34.78M ⚡
Kulkarni Sandeep Chidambar
CEO · Director
Date
Oct 28
Shares
30,387
Price
—
Value
—
Kulkarni Sandeep Chidambar
CEO · Director
Date
Oct 28
Shares
7,000
Price
$48.00
Value
$336K
Kulkarni Sandeep Chidambar
CEO · Director
Date
Oct 22
Shares
25,316
Price
$7.90
Value
$200K
Johnson Kevin Bruce
Chief Regulatory Officer
Date
Oct 15
Shares
6,250
Price
—
Value
—
Kulkarni Sandeep Chidambar
CEO · Director
Date
Aug 21
Shares
1,779
Price
$14.85
Value
$26K
Kulkarni Sandeep Chidambar
CEO · Director
Date
Aug 16
Shares
5,221
Price
$13.79
Value
$72K
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About TRML insider trading
TRML insider trades
Tourmaline Bio, Inc. (TRML) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including KANTOFF AARON (Director), Kulkarni Sandeep Chidambar (CEO · Director), Johnson Kevin Bruce (Chief Regulatory Officer). Over the past 12 months, 5 insiders have filed transactions with the SEC. TRML insiders have been mixed buying and selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Tourmaline Bio, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
TRML insider trading · 5 questionsThe insiders of Tourmaline Bio, Inc. (TRML) include executives and directors such as KANTOFF AARON (Director), Kulkarni Sandeep Chidambar (CEO · Director), Johnson Kevin Bruce (Chief Regulatory Officer), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026