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Insider Trading Intelligence
Pricing
…
JM

Jennifer Michaelson

CGEM
SEE REMARKS · CULLINAN THERAPEUTICS, INC. · CIK 0001838061
FILING MIX · LIFETIME30%/70%
BUYS
28
SELLS
65
TOTAL VALUE
$4.44M
COMPANIES
1
ACTIVE SINCE
Jan 2021
HOLDINGS NOW
167,044
AVG SELL PX
$19.15
TRADE KIND
SHOWING 93 / 93
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
45 backtested trades · 8 horizons · 42 pending
Forward-return performance of every backtestable P/S trade by Jennifer Michaelson, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d45+48.89%+0.14%+1.15%-1.00%-2.73%-0.76
14d45+51.11%-0.00%+0.86%-0.84%+0.92%-0.47
30d45+66.67%-3.17%+1.43%-4.84%-7.01%-1.97
60d45+60.00%+0.27%+3.21%-2.94%-10.91%-0.57
90d45(2 pending)+58.14%-3.52%+3.08%-7.21%-13.89%-1.39
180d45(8 pending)+72.97%-11.20%+6.38%-18.13%-32.45%-2.30
1y45(13 pending)+62.50%+1.93%+14.16%-12.24%-24.12%-1.20
2y45(19 pending)+76.92%-24.38%+32.40%-56.77%-61.92%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
CGEM · 167,044 shares · as of May 5, 2026
056,495112,989169,484225,97820222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 28 buys / 65 sellsCOVERAGE · 22 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
4,000——116,987May 5, 2026May 6, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Scientific Officer
4,000$4.30$17.2K174,844May 5, 2026May 6, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
200$15.58$3.1K166,844May 5, 2026May 6, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
7,800$14.60$113.9K167,044May 5, 2026May 6, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
8,000$15.68$125.4K170,844Mar 5, 2026Mar 9, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Scientific Officer
4,000$4.30$17.2K178,844Mar 5, 2026Mar 9, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
4,000——120,987Mar 5, 2026Mar 9, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
1,780$14.14$25.2K174,844Feb 25, 2026Feb 26, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
3,601$14.47$52.1K176,624Feb 24, 2026Feb 25, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
1,752$13.99$24.5K180,225Feb 23, 2026Feb 25, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
3,742$13.62$51.0K181,977Feb 20, 2026Feb 23, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
8,000$14.30$114.4K181,977Feb 20, 2026Feb 23, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
8,000——124,987Feb 20, 2026Feb 23, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Scientific Officer
8,000$4.30$34.4K189,977Feb 20, 2026Feb 23, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
57,500——185,719Feb 18, 2026Feb 19, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
115,000——115,000Feb 18, 2026Feb 19, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
416$12.03$5.0K128,219Feb 12, 2026Feb 13, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
4,000$12.30$49.2K128,635Jan 22, 2026Jan 23, 2026 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
1,345$10.01$13.5K132,635Dec 19, 2025Dec 22, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
2,898$9.67$28.0K133,980Dec 18, 2025Dec 19, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
995$11.90$11.8K136,878Dec 15, 2025Dec 16, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
2,148$12.38$26.6K137,873Dec 12, 2025Dec 16, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
4,000$12.30$49.2K138,004Nov 24, 2025Nov 25, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
3,756$8.53$32.0K142,004Feb 25, 2025Feb 27, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
50,000——145,760Feb 19, 2025Feb 21, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
100,000——100,000Feb 19, 2025Feb 21, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
4,000$12.51$50.0K95,760Jan 6, 2025Jan 7, 2025 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
4,693$11.41$53.5K99,760Dec 18, 2024Dec 20, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
3,489$12.52$43.7K104,453Dec 12, 2024Dec 16, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
8,000$15.64$125.1K107,942Nov 5, 2024Nov 6, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
8,000$18.09$144.7K115,942Sep 5, 2024Sep 9, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
8,000$16.33$130.6K123,942Jul 5, 2024Jul 9, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
2,360$9.00$21.2K131,942Jul 1, 2024Jul 2, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
5,606——132,987May 7, 2024May 8, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
5,606$30.06$168.5K129,582May 7, 2024May 8, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Scientific Officer
5,606$4.30$24.1K135,188May 7, 2024May 8, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
50,000——138,593May 6, 2024May 8, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Scientific Officer
50,000$4.30$215.0K187,582May 6, 2024May 8, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
20,277$28.54$578.7K129,582May 6, 2024May 8, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
37,723$27.82$1.05M149,859May 6, 2024May 8, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
100,000——100,000Feb 22, 2024Feb 23, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
50,000——137,582Feb 22, 2024Feb 23, 2024 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
1,145$8.50$9.7K87,582Dec 21, 2023Dec 22, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
238$8.22$2.0K88,727Dec 18, 2023Dec 20, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Scientific Officer
1,068$7.81$8.3K88,965Dec 12, 2023Dec 13, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
238$12.94$3.1K90,033Jun 20, 2023Jun 21, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
176$13.11$2.3K90,271Jun 12, 2023Jun 14, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
100$12.40$1.2K90,447Jun 7, 2023Jun 8, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
100——188,593Jun 7, 2023Jun 8, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Development Officer
100$4.30$43090,547Jun 7, 2023Jun 8, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
11,900$12.31$146.5K90,447Jun 6, 2023Jun 8, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Development Officer
11,900$4.30$51.2K102,347Jun 6, 2023Jun 8, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
11,900——188,693Jun 6, 2023Jun 8, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
239$8.76$2.1K90,447May 18, 2023May 19, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
193$8.78$1.7K90,686May 12, 2023May 16, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
238$10.71$2.5K90,879Apr 18, 2023Apr 20, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
176$10.22$1.8K91,117Apr 12, 2023Apr 14, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
238$11.32$2.7K91,293Mar 20, 2023Mar 27, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
38,500——91,531Feb 17, 2023Feb 21, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
77,000——77,000Feb 17, 2023Feb 21, 2023 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
4,000——200,593Nov 25, 2022Nov 29, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
4,000$13.30$53.2K53,031Nov 25, 2022Nov 29, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
See Remarks
4,000$4.30$17.2K57,031Nov 25, 2022Nov 29, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
See Remarks
4,000$4.30$17.2K57,031Sep 27, 2022Sep 29, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
4,000——204,593Sep 27, 2022Sep 29, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
4,000$12.40$49.6K53,031Sep 27, 2022Sep 29, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Development Officer
1,385$4.30$6.0K54,416Aug 8, 2022Aug 9, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
1,385$15.01$20.8K53,031Aug 8, 2022Aug 9, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
1,385——208,593Aug 8, 2022Aug 9, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
8,000——209,978Jul 25, 2022Jul 26, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
Chief Development Officer
8,000$4.30$34.4K61,031Jul 25, 2022Jul 26, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Development Officer
8,000$14.51$116.1K53,031Jul 25, 2022Jul 26, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
1,620$10.90$17.7K53,031Jun 30, 2022Jul 5, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
28,500——51,411Feb 11, 2022Feb 15, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
57,000——57,000Feb 11, 2022Feb 15, 2022 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
4,000——217,978Oct 18, 2021Oct 20, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
400$23.61$9.4K22,911Oct 18, 2021Oct 20, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
204$22.40$4.6K23,311Oct 18, 2021Oct 20, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
3,396$21.10$71.7K23,515Oct 18, 2021Oct 20, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
See Remarks
4,000$4.30$17.2K26,911Oct 18, 2021Oct 20, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
See Remarks
4,000$4.30$17.2K26,911Sep 20, 2021Sep 21, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
4,000——221,978Sep 20, 2021Sep 21, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
3,200$24.34$77.9K23,711Sep 20, 2021Sep 21, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
800$25.20$20.2K22,911Sep 20, 2021Sep 21, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
4,000——225,978Aug 18, 2021Aug 26, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
See Remarks
4,000$4.30$17.2K26,911Aug 18, 2021Aug 26, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
1,137$28.07$31.9K22,911Aug 18, 2021Aug 26, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
2,863$27.50$78.7K24,048Aug 18, 2021Aug 26, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
4,000——225,978Aug 18, 2021Aug 24, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
2,863$27.50$78.7K24,048Aug 18, 2021Aug 24, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASE
See Remarks
4,000$4.30$17.2K26,911Aug 18, 2021Aug 24, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
See Remarks
1,137$28.07$31.9K22,911Aug 18, 2021Aug 24, 2021 ↗View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
79,999——79,999Jan 7, 2021Jan 7, 2021 ↗View →
Other insiders · CGEM
Loading peer insiders…
About this filer
CIK 0001838061
ROLE
See Remarks
PRIMARY
CGEM
COMPANIES
1
ACTIVE SINCE
Jan 2021
MARKETPEEL · /INSIDER/0001838061DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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