CULLINAN THERAPEUTICS INC CGEM
COM · Common Stock · CUSIP 230031106 · ISIN US2300311063
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersCambridge, MA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($43.6k this quarter). Holder counts are more reliable. Shares outstanding: 42.7m as of 2023-07-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $10.77. Options: 4 managers hold calls ($42.8k notional), 4 hold puts ($389.8k).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 100 |
| Q4 2022 | 98 |
| Q1 2023 | 104 |
| Q2 2023 | 107 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 52 | 36 |
| Q1 2023 | 49 | 43 |
| Q2 2023 | 51 | 59 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $504.0k | $2.0k | 0.00 |
| Q4 2022 | $12.7k | $3.2k | 0.25 |
| Q1 2023 | $28.6k | $15.3k | 0.54 |
| Q2 2023 | $42.8k | $389.8k | 9.11 |
Biggest buyers
| BRAIDWELL LP | New | +1.9m |
| FRANKLIN RESOURCES INC | Added | +1.5m |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | New | +1.1m |
| CITADEL ADVISORS LLC | Added | +433.3k |
| Verition Fund Management LLC | New | +221.1k |
| BANK OF MONTREAL /CAN/ | New | +187.5k |
| Parkman Healthcare Partners LLC | Added | +176.9k |
| DIMENSIONAL FUND ADVISORS LP | Added | +176.4k |
| MORGAN STANLEY | Added | +159.1k |
| Lynx1 Capital Management LP | New | +115.1k |
Biggest sellers
| VANGUARD GROUP INC | Reduced | -527.6k |
| SILVERARC CAPITAL MANAGEMENT, LLC | Sold out | -265.0k |
| EcoR1 Capital, LLC | Sold out | -246.4k |
| BlackRock Inc. | Reduced | -151.5k |
| Atom Investors LP | Sold out | -120.1k |
| Assenagon Asset Management S.A. | Reduced | -94.5k |
| GOLDMAN SACHS GROUP INC | Reduced | -78.4k |
| BANK OF AMERICA CORP /DE/ | Reduced | -66.4k |
| ORBIMED ADVISORS LLC | Reduced | -60.5k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -55.5k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $33.4k3.1k shares |
| GROUP ONE TRADING LLC | New | $6.5k600 shares |
| SIMPLEX TRADING, LLC | New | $3.0k300 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $357.2k33.2k shares |
| CITADEL ADVISORS LLC | Added | $22.6k2.1k shares |
| SIMPLEX TRADING, LLC | New | $10.0k1.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BIOTECHNOLOGY VALUE FUND L P 13G · passive investor no change · filed 2026-08-14 | 10.0% |
| Lynx1 Capital Management LP 13G · passive investor -4.7 pts · filed 2025-11-14 | 9.8% |
| PRICE T ROWE ASSOCIATES INC /MD/ 13G · institution new · filed 2026-08-14 | 6.2% |
| STATE STREET CORP 13G · institution new · filed 2026-08-07 | 6.0% |
| Kynam Capital Management, LP 13G · institution new · filed 2026-03-04 | 5.3% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26), CITADEL ADVISORS LLC (3.4%, 2025-11-14)
Insider purchases and sales in Q2 2023
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 3 | $802.0k | — |
| Q1 2022 | 0 | — | 0 | — | — |
| Q2 2022 | 1 | $100.3k | 0 | — | — |
| Q3 2022 | 0 | — | 2 | $1.0m | — |
| Q4 2022 | 0 | — | 1 | $53.2k | — |
| Q1 2023 | 0 | — | 5 | $22.5k | — |
| Q2 2023 | 0 | — | 5 | $229.4k | $147.7k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-06-28 | AHMED NADIM President and CEO, director | Sold | $8.7k759 shares |
| 2023-06-20 | Trigilio Jeffrey Chief Financial Officer | Sold | $5.2k399 shares |
| 2023-06-20 | Jones Jeffrey Alan Chief Medical Officer | Sold | $5.0k387 shares |
| 2023-06-20 | SUMER JACQUELYN L Chief Legal Officer | Sold | $3.8k291 shares |
| 2023-06-20 | Michaelson Jennifer Chief Development Officer | Sold | $3.1k238 shares |
| 2023-06-12 | Trigilio Jeffrey Chief Financial Officer | Sold | $4.2k319 shares |
| 2023-06-12 | Michaelson Jennifer Chief Development Officer | Sold | $2.3k176 shares |
| 2023-06-07 | Michaelson Jennifer Chief Development Officer | Sold plan | $1.2k100 shares |
| 2023-06-06 | Michaelson Jennifer Chief Development Officer | Sold plan | $146.5k11.9k shares |
| 2023-05-23 | AHMED NADIM President and CEO, director | Sold | $6.5k707 shares |
| 2023-05-18 | Trigilio Jeffrey Chief Financial Officer | Sold | $3.5k399 shares |
| 2023-05-18 | Jones Jeffrey Alan Chief Medical Officer | Sold | $3.5k394 shares |
| 2023-05-18 | SUMER JACQUELYN L Chief Legal Officer | Sold | $2.5k291 shares |
| 2023-05-18 | Michaelson Jennifer Chief Development Officer | Sold | $2.1k239 shares |
| 2023-05-12 | Trigilio Jeffrey Chief Financial Officer | Sold | $3.0k347 shares |
| 2023-05-12 | Michaelson Jennifer Chief Development Officer | Sold | $1.7k193 shares |
| 2023-04-25 | AHMED NADIM President and CEO, director | Sold | $7.6k716 shares |
| 2023-04-18 | Trigilio Jeffrey Chief Financial Officer | Sold | $4.3k398 shares |
| 2023-04-18 | Jones Jeffrey Alan Chief Medical Officer | Sold | $4.2k392 shares |
| 2023-04-18 | SUMER JACQUELYN L Chief Legal Officer | Sold | $3.1k290 shares |
| 2023-04-18 | Michaelson Jennifer Chief Development Officer | Sold | $2.5k238 shares |
| 2023-04-12 | Trigilio Jeffrey Chief Financial Officer | Sold | $3.2k318 shares |
| 2023-04-12 | Michaelson Jennifer Chief Development Officer | Sold | $1.8k176 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| MPM BIOIMPACT LLC 16.57% of their portfolio | 7.6m $82.3m | Unchanged |
| CHI Advisors LLC 11.15% of their portfolio | 3.4m $36.7m | Added +64.7k |
| BVF INC/IL 0.96% of their portfolio | 3.2m $34.4m | Unchanged |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 2.3m $25.1m | Added +1.5m |
| BlackRock Inc. 0.00% of their portfolio | 2.1m $22.6m | Reduced -151.5k |
| VANGUARD GROUP INC 0.00% of their portfolio | 2.0m $21.8m | Reduced -527.6k |
| BRAIDWELL LP 0.67% of their portfolio | 1.9m $20.5m | New |
| AMERICAN INTERNATIONAL GROUP, INC. 0.08% of their portfolio | 1.2m $13.3m | Reduced -1.2k |
| Nextech Invest Ltd. 4.47% of their portfolio | 1.2m $13.1m | Unchanged |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.03% of their portfolio | 1.1m $12.4m | New |
| Boxer Capital, LLC 0.54% of their portfolio | 1.1m $11.6m | Unchanged |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 1.1m $11.4m | Added +433.3k |
| Rubric Capital Management LP 0.29% of their portfolio | 626.9k $6.7m | Unchanged |
| ORBIMED ADVISORS LLC 0.11% of their portfolio | 544.8k $5.9m | Reduced -60.5k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.14% of their portfolio | 541.9k $5.8m | Reduced -43.0k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 522.7k $5.6m | Added +176.4k |
| STATE STREET CORP 0.00% of their portfolio | 522.2k $5.6m | Reduced -40.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 512.3k $5.5m | Reduced -25.5k |
| TANG CAPITAL MANAGEMENT LLC 0.71% of their portfolio | 450.0k $4.8m | Reduced -50.0k |
| Parkman Healthcare Partners LLC 0.65% of their portfolio | 346.8k $3.7m | Added +176.9k |
| MORGAN STANLEY 0.00% of their portfolio | 325.1k $3.5m | Added +159.1k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 310.5k $3.3m | Reduced -12.4k |
| Artal Group S.A. 0.09% of their portfolio | 250.0k $2.7m | Unchanged |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 245.6k $2.6m | Added +6.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 236.5k $2.5m | Reduced -12.0k |
| Hudson Bay Capital Management LP 0.02% of their portfolio | 225.0k $2.4m | Added +75.0k |
| Verition Fund Management LLC 0.04% of their portfolio | 221.1k $2.4m | New |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 189.1k $2.0m | Reduced -55.5k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 187.5k $2.5m | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 185.8k $2.0m | Reduced -1.7k |
| Assenagon Asset Management S.A. 0.01% of their portfolio | 126.9k $1.4m | Reduced -94.5k |
| Lynx1 Capital Management LP 0.81% of their portfolio | 115.1k $1.2m | New |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 105.1k $1.1m | Added +70.7k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 101.4k $1.1m | Reduced -78.4k |
| UBS Group AG 0.00% of their portfolio | 91.1k $979.9k | Reduced -10.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 87.2k $937.9k | Reduced -9.1k |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.02% of their portfolio | 85.0k $914.6k | Not comparable |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio | 83.7k $901.1k | New |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 77.3k $831.9k | Added +5.1k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 71.8k $772.8k | Reduced -16.5k |
| VIRGINIA RETIREMENT SYSTEMS ET Al 0.01% of their portfolio | 64.8k $697.2k | Added +2.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 62.9k $676.4k | Added +3.0k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 55.9k $602.0k | Reduced -17.6k |
| FMR LLC 0.00% of their portfolio | 54.9k $591.0k | Reduced -53.6k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 53.9k $579.8k | Added +32.2k |
| Velan Capital Investment Management LP 0.51% of their portfolio | 50.0k $538.0k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 46.2k $497.4k | Reduced -4.9k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 43.7k $470.6k | Added +11.0k |
| MARTINGALE ASSET MANAGEMENT L P 0.01% of their portfolio | 42.5k $457.6k | Unchanged |
| New York Life Investment Management LLC 0.00% of their portfolio | 40.3k $433.5k | Reduced -3.6k |
| ExodusPoint Capital Management, LP 0.00% of their portfolio | 39.2k $421.0k | Reduced -5.0k |
| Swiss National Bank 0.00% of their portfolio | 38.6k $415.3k | Added +9.0k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 35.6k $382.7k | New |
| HRT FINANCIAL LP 0.00% of their portfolio | 28.5k $306.0k | New |
| Birchview Capital, LP 0.20% of their portfolio | 25.1k $270.2k | Unchanged |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 23.5k $252.7k | Added +1.7k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 22.5k $242.3k | Added +1.3k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 21.8k $234.4k | Added +19.6k |
| BARCLAYS PLC 0.00% of their portfolio | 21.7k $234.0k | Reduced -6.6k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 21.0k $226.0k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 20.7k $222.5k | Reduced -1.6k |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 20.1k $216.4k | Added +9.4k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 19.8k $212.9k | Reduced -66.4k |
| CORNERCAP INVESTMENT COUNSEL INC 0.04% of their portfolio | 18.8k $202.2k | Added +2.9k |
| Allspring Global Investments Holdings, LLC 0.00% of their portfolio | 18.5k $198.7k | Added +4.4k |
| Legal & General Group Plc 0.00% of their portfolio | 14.6k $156.8k | Added +7.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 14.4k $155.0k | Added +365 |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 14.0k $150.2k | Reduced -80 |
| HARBOR CAPITAL ADVISORS, INC. 0.03% of their portfolio | 13.9k $149.5k | New |
| SVB FINANCIAL GROUP 0.27% of their portfolio | 13.5k $145.4k | Reduced -6.8k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 13.3k $143.5k | Reduced -3.1k |
| EXCHANGE TRADED CONCEPTS, LLC 0.00% of their portfolio | 11.7k $125.5k | New |
| MARSHALL WACE, LLP 0.00% of their portfolio | 10.8k $116.6k | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 10.8k $115.7k | Reduced -1.5k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 10.7k $115.0k | Reduced -1.5k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 10.0k $108.0k | Reduced -173 |
| Annandale Capital, LLC 0.03% of their portfolio | 10.0k $108.0k | Unchanged |
| VIRTUS ADVISERS, LLC 0.06% of their portfolio | 9.2k $99.4k | Added +756 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 9.1k $97.7k | Added +4.4k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 9.0k $97.0k | Added +7.5k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 8.3k $89.2k | Reduced -7.7k |
| CITIGROUP INC 0.00% of their portfolio | 8.2k $88.5k | Reduced -9.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 6.7k $72.1k | Reduced -7.5k |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 6.0k $65.1k | New |
| Point72 Middle East FZE 0.00% of their portfolio | 5.5k $58.9k | New |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio | 4.9k $53.0k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 3.1k $32.9k | Added +858 |
| Gladius Capital Management LP 0.01% of their portfolio | 2.6k $27.7k | Reduced -400 |
| AMALGAMATED BANK 0.00% of their portfolio | 2.4k $26.0k | Reduced -448 |
| Point72 Asset Management, L.P. 0.00% of their portfolio | 2.0k $21.8k | New |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 2.0k $21.3k | Unchanged |
| Metropolitan Life Insurance Co/NY 0.00% of their portfolio | 1.3k $13.8k | Reduced -503 |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 1.3k $13.0k | New |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 516 $5.6k | Reduced -17 |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 479 $5.2k | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 457 $4.9k | Unchanged |
| Ancora Advisors LLC 0.00% of their portfolio | 200 $2.2k | New |
| Lindbrook Capital, LLC 0.00% of their portfolio | 154 $1.7k | Reduced -233 |
| Red Tortoise LLC 0.00% of their portfolio | 140 $1.5k | New |
| Daiwa Securities Group Inc. 0.00% of their portfolio | 127 $1.0k | Unchanged |