Cullinan Therapeutics, Inc. (CGEM)
Data as of , from SEC Form 4 filings.
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About Cullinan Therapeutics, Inc. (CGEM)
The SEC lists Cullinan Therapeutics, Inc. under CIK 0001789972, in biological products (no diagnostic substances). We track it alongside the rest of the Health Care sector.
CGEM Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 2 | 38,000 | $780K |
| Option exercise | 4 | 68,000 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
CGEM insider transactions (Form 4)
4750 Form 4 filings on record, the earliest from Nov 7, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jennifer Michaelson - Officer | Option exercise | Common Stock | 4,000 | $4.30 | $17K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 8,000 | $21.57 footnote F2 | $173K | |
| Jennifer Michaelson - Officer | Option exercise | Stock Option (Right to Buy) | 4,000 | $0.00 | - | |
| ||||||
| Jennifer Michaelson - Officer | Option exercise | Common Stock | 30,000 | $4.30 | $129K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 30,000 | $20.26 footnote F2 | $608K | |
| Jennifer Michaelson - Officer | Option exercise | Stock Option (Right to Buy) | 30,000 | $0.00 | - | |
| ||||||
| Jennifer Michaelson - Officer | Option exercise | Common Stock | 4,000 | $4.30 | $17K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 8,000 | $17.82 footnote F2 | $143K | |
| Jennifer Michaelson - Officer | Option exercise | Stock Option (Right to Buy) | 4,000 | $0.00 | - | |
| ||||||
| Jacquelyn L. Sumer - Officer | Grant or award | Common Stock | 2,470 | $8.60 footnote F2 | $21K | |
| ||||||
 Mary Kay Fenton - Officer | Grant or award | Common Stock | 1,541 | $8.60 footnote F2 | $13K | |
| ||||||
| Anthony Rosenberg | Grant or award | Stock Option (Right to Buy) | 25,319 | $0.00 | - | |
| David D. Meek | Grant or award | Stock Option (Right to Buy) | 25,319 | $0.00 | - | |
| Stephen W. Webster | Grant or award | Stock Option (Right to Buy) | 25,319 | $0.00 | - | |
| Andrew R. Allen | Grant or award | Stock Option (Right to Buy) | 21,781 | $0.00 | - | |
 Mary Thistle | Grant or award | Stock Option (Right to Buy) | 25,319 | $0.00 | - | |
| Mittie Doyle | Grant or award | Stock Option (Right to Buy) | 21,781 | $0.00 | - | |
| Jennifer Michaelson - Officer | Option exercise | Common Stock | 4,000 | $4.30 | $17K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 7,800 | $14.60 footnote F2 | $114K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 200 | $15.58 footnote F3 | $3K | |
| Jennifer Michaelson - Officer | Option exercise | Stock Option (Right to Buy) | 4,000 | $0.00 | - | |
| ||||||
| Jennifer Michaelson - Officer | Option exercise | Stock Option (Right to Buy) | 4,000 | $0.00 | - | |
| Jennifer Michaelson - Officer | Option exercise | Common Stock | 4,000 | $4.30 | $17K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 8,000 | $15.68 footnote F2 | $125K | |
| ||||||
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 1,780 | $14.14 footnote F2 | $25K | |
| ||||||
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 1,752 | $13.99 footnote F2 | $25K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 3,601 | $14.47 | $52K | |
| ||||||
| Nadim Ahmed - Officer | Open-market sale | Common Stock | 13,515 | $14.47 | $196K | |
| Jeffrey Alan Jones - Officer | Open-market sale | Common Stock | 4,582 | $14.47 | $66K | |
| Jacquelyn L. Sumer - Officer | Open-market sale | Common Stock | 3,601 | $14.47 | $52K | |
| Jeffrey Alan Jones - Officer | Open-market sale | Common Stock | 4,982 | $13.62 | $68K | |
| Jennifer Michaelson - Officer | Option exercise | Common Stock | 8,000 | $4.30 | $34K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 3,742 | $13.62 | $51K | |
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 8,000 | $14.30 | $114K | |
| Jennifer Michaelson - Officer | Option exercise | Stock Option (Right to Buy) | 8,000 | $0.00 | - | |
| Jacquelyn L. Sumer - Officer | Open-market sale | Common Stock | 3,742 | $13.62 | $51K | |
| Nadim Ahmed - Officer | Open-market sale | Common Stock | 16,381 | $13.62 | $223K | |
| Mary Kay Fenton - Officer | Open-market sale | Common Stock | 4,398 | $13.62 | $60K | |
| Jacquelyn L. Sumer - Officer | Grant or award | Stock Option (Right to Buy) | 230,000 | $0.00 | - | |
| Jeffrey Alan Jones - Officer | Grant or award | Stock Option (Right to Buy) | 300,000 | $0.00 | - | |
| Nadim Ahmed - Officer | Grant or award | Stock Option (Right to Buy) | 828,000 | $0.00 | - | |
| Corrine Savill - Officer | Grant or award | Stock Option (Right to Buy) | 175,000 | $0.00 | - | |
| Mary Kay Fenton - Officer | Grant or award | Common Stock | 68,750 footnote F1 | $0.00 | - | |
| Mary Kay Fenton - Officer | Grant or award | Stock Option (Right to Buy) | 137,500 | $0.00 | - | |
| ||||||
| Jennifer Michaelson - Officer | Grant or award | Common Stock | 57,500 footnote F1 | $0.00 | - | |
| Jennifer Michaelson - Officer | Grant or award | Stock Option (Right to Buy) | 115,000 | $0.00 | - | |
| ||||||
| Jennifer Michaelson - Officer | Open-market sale | Common Stock | 416 | $12.03 | $5K | |
Item 7.01, 8.01, 9.01
Item 7.01, 8.01, 9.01
Item 7.01, 8.01, 9.01
Item 2.02, 9.01
Recent CGEM Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| JENNIFER MICHAELSON | Officer | 8,000 | $177K | View on EDGAR | |
| JENNIFER MICHAELSON | Officer | 30,000 |
CGEM insider trading FAQ
What is the latest insider trade for CGEM?
Cullinan Therapeutics, Inc. (CGEM) had 2 insider filings in the last 90 days, with the most recent on 2026-09-10. The full record for CGEM runs to 50 Form 4 filings, the earliest from 2024-11-07. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying CGEM stock?
No insider purchases of CGEM were filed in the last 90 days. 8 purchases are on record for this company.
How many insiders are selling CGEM stock?
2 insider sales of CGEM were filed in the last 90 days, totaling $780K.
Where can I see CGEM SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects CGEM Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Jennifer Michaelson view on EDGAR
- - Jennifer Michaelson view on EDGAR
- - Jennifer Michaelson view on EDGAR
- - Jacquelyn L. Sumer view on EDGAR
- - Mary Kay Fenton view on EDGAR
- - Anthony Rosenberg view on EDGAR
- - David D. Meek view on EDGAR
- - Stephen W. Webster view on EDGAR
- - Andrew R. Allen view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Health Care
- Where CGEM's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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