Cullinan Therapeutics, Inc.

CGEMNASDAQHealthcare● Active

$13.25

$-0.26(-1.92%)

Market Cap$814318500

P/E Ratio—

52W High$16.74

52W Low$5.68

Avg Volume884K

Open$13.72

Beta0.01

Overview

Cullinan Therapeutics, Inc. (CGEM) 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 · CGEM · as of Jun 8, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

0.32

Buy/Sell (by trades)

Overall sentiment

BEARISH

↑ Buy 24%Active transactions only · RSU vesting excluded76% Sell ↓

Cullinan Therapeutics, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 8, 2026

CGEM insider buying and selling by quarter

CGEM insider selling · CGEM insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

1.9M962K0

2024 Q3

2024 Q4

2025 Q1

2025 Q2

2025 Q3

2025 Q4

2026 Q1

2026 Q2

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 · CGEM 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

CGEM executive sell shares · CGEM board member insider trading · CGEM insider trading SEC filing

Showing 61 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
May 5, 2026	Michaelson Jennifer Chief Scientific Officer	Option	4,000	$4.30	$17K	174,844	Form 4
May 5, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	7,800	$14.60	$114K	167,044	Form 4
May 5, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	200	$15.58	$3K	166,844	Form 4
Mar 5, 2026	Michaelson Jennifer Chief Scientific Officer	Option	4,000	$4.30	$17K	178,844	Form 4
Mar 5, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	8,000	$15.68	$125K	170,844	Form 4
Feb 25, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	1,780	$14.14	$25K	174,844	Form 4
Feb 23, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	1,752	$13.99	$25K	180,225	Form 4
Feb 24, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	3,601	$14.47	$52K	176,624	Form 4
Feb 24, 2026	AHMED NADIM President and CEO · Director	Sale	13,515	$14.47	$196K	390,803	Form 4
Feb 24, 2026	Jones Jeffrey Alan Chief Medical Officer	Sale	4,582	$14.47	$66K	159,968	Form 4
Feb 24, 2026	SUMER JACQUELYN L Chief Legal Officer	Sale	3,601	$14.47	$52K	128,089	Form 4
Feb 20, 2026	Jones Jeffrey Alan Chief Medical Officer	Sale	4,982	$13.62	$68K	164,550	Form 4
Feb 20, 2026	Michaelson Jennifer Chief Scientific Officer	Option	8,000	$4.30	$34K	189,977	Form 4
Feb 20, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	8,000	$14.30	$114K	181,977	Form 4
Feb 20, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	3,742	$13.62	$51K	181,977	Form 4
Feb 20, 2026	SUMER JACQUELYN L Chief Legal Officer	Sale	3,742	$13.62	$51K	131,690	Form 4
Feb 20, 2026	AHMED NADIM President and CEO · Director	Sale	16,381	$13.62	$223K	404,318	Form 4
Feb 20, 2026	Fenton Mary Kay CFO	Sale	4,398	$13.62	$60K	126,380	Form 4
Feb 18, 2026	Fenton Mary Kay CFO	Award	68,750	—	—	130,778	Form 4
Feb 18, 2026	Michaelson Jennifer Chief Scientific Officer	Award	57,500	—	—	185,719	Form 4
Feb 12, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	416	$12.03	$5K	128,219	Form 4
Jan 22, 2026	Michaelson Jennifer Chief Scientific Officer	Sale	4,000	$12.30	$49K	128,635	Form 4
Dec 31, 2025	Fenton Mary Kay CFO	Award	27	$6.49	$175	62,028	Form 4
Dec 23, 2025	AHMED NADIM President and CEO · Director	Sale	9,922	$10.01	$99K	420,699	Form 4
Dec 19, 2025	Michaelson Jennifer Chief Scientific Officer	Sale	1,345	$10.01	$13K	132,635	Form 4

Michaelson Jennifer

Chief Scientific Officer

Option

Date

May 5

4,000

Price

$4.30

Value

$17K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

May 5

7,800

Price

$14.60

Value

$114K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

May 5

200

Price

$15.58

Value

$3K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Option

Date

Mar 5

4,000

Price

$4.30

Value

$17K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Mar 5

8,000

Price

$15.68

Value

$125K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Feb 25

1,780

Price

$14.14

Value

$25K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Feb 23

1,752

Price

$13.99

Value

$25K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Feb 24

3,601

Price

$14.47

Value

$52K

View Form 4 on SEC.gov

AHMED NADIM

President and CEO · Director

Sale

Date

Feb 24

13,515

Price

$14.47

Value

$196K

View Form 4 on SEC.gov

Jones Jeffrey Alan

Chief Medical Officer

Sale

Date

Feb 24

4,582

Price

$14.47

Value

$66K

View Form 4 on SEC.gov

SUMER JACQUELYN L

Chief Legal Officer

Sale

Date

Feb 24

3,601

Price

$14.47

Value

$52K

View Form 4 on SEC.gov

Jones Jeffrey Alan

Chief Medical Officer

Sale

Date

Feb 20

4,982

Price

$13.62

Value

$68K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Option

Date

Feb 20

8,000

Price

$4.30

Value

$34K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Feb 20

8,000

Price

$14.30

Value

$114K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Feb 20

3,742

Price

$13.62

Value

$51K

View Form 4 on SEC.gov

SUMER JACQUELYN L

Chief Legal Officer

Sale

Date

Feb 20

3,742

Price

$13.62

Value

$51K

View Form 4 on SEC.gov

AHMED NADIM

President and CEO · Director

Sale

Date

Feb 20

16,381

Price

$13.62

Value

$223K

View Form 4 on SEC.gov

Fenton Mary Kay

CFO

Sale

Date

Feb 20

4,398

Price

$13.62

Value

$60K

View Form 4 on SEC.gov

Fenton Mary Kay

CFO

Award

Date

Feb 18

68,750

Price

—

Value

—

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Award

Date

Feb 18

57,500

Price

—

Value

—

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Feb 12

416

Price

$12.03

Value

$5K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Jan 22

4,000

Price

$12.30

Value

$49K

View Form 4 on SEC.gov

Fenton Mary Kay

CFO

Award

Date

Dec 31

Price

$6.49

Value

$175

View Form 4 on SEC.gov

AHMED NADIM

President and CEO · Director

Sale

Date

Dec 23

9,922

Price

$10.01

Value

$99K

View Form 4 on SEC.gov

Michaelson Jennifer

Chief Scientific Officer

Sale

Date

Dec 19

1,345

Price

$10.01

Value

$13K

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

1 / 3

▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About CGEM insider trading

CGEM insider trades

Cullinan Therapeutics, Inc. (CGEM) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Michaelson Jennifer (Chief Scientific Officer), Lynx1 Capital Management LP (10 percent owner), AHMED NADIM (President and CEO · Director). Over the past 12 months, 5 insiders have filed transactions with the SEC. CGEM insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Cullinan Therapeutics, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

CGEM insider trading · 5 questions

The insiders of Cullinan Therapeutics, Inc. (CGEM) include executives and directors such as Michaelson Jennifer (Chief Scientific Officer), Lynx1 Capital Management LP (10 percent owner), AHMED NADIM (President and CEO · Director), 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.

CGEM board member insider tradingwho are CGEM insidersCGEM insider rosterCullinan Therapeutics, Inc. executives insider activity

▸ 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