Springer Timothy A

Cartesian Therapeutics, Inc. ยท Director, 10% Owner

Springer Timothy A is listed in public filings as director, 10 percent owner:. This Springer Timothy A insider trading page organizes Form 4 disclosures, reported purchases and sales, transaction dates, share amounts, related issuers, and historical insider activity so readers can review the person's public trading record in one place. Companies and tickers connected to this insider trading profile include Cartesian Therapeutics, Inc. (RNAC), and Tectonic Therapeutic, Inc. (TECX). Investors use Springer Timothy A's insider trading disclosures to study buying and selling patterns, position changes, company-specific activity, and the source evidence behind each reported transaction.

Latest Actions

CompanyHolding ValueLast TransactionAmountTransaction PriceCurrent Price
Cartesian Therapeutics, Inc.RNAC--8.6M sharesGrant / ExerciseJan 2, 2026Disclosure amount unavailable2.6k shares----
Cartesian Therapeutics, Inc.RNAC$53k7.8k sharesGrant / ExerciseJan 2, 2026$52.7K7.8k shares$6.76--

Insider Trades History

CompanyHolding ValueLast TransactionAmountTransaction PriceCurrent Price
Tectonic Therapeutic, Inc.TECX$250k10.2k sharesGrant / ExerciseJun 9, 2025$249.7K10.2k shares$24.48--
Tectonic Therapeutic, Inc.TECX$25M1.5M sharesBuyApr 11, 2025$875.9K53.7k shares$16.31--
Cartesian Therapeutics, Inc.RNAC$7.1M656.5k sharesBuyApr 11, 2025$391.5K36.3k shares$10.77--
Tectonic Therapeutic, Inc.TECX$71M4.3M sharesBuyApr 11, 2025$154.6K9.5k shares$16.31--
Cartesian Therapeutics, Inc.RNAC$93M8.6M sharesBuyApr 11, 2025$69.1K6.4k shares$10.77--
Tectonic Therapeutic, Inc.TECX$24M1.4M sharesBuyApr 10, 2025$767.2K45.9k shares$16.73--
Cartesian Therapeutics, Inc.RNAC$6.4M616.7k sharesBuyApr 10, 2025$471.1K45.1k shares$10.43--
Tectonic Therapeutic, Inc.TECX$72M4.3M sharesBuyApr 10, 2025$135.4K8.1k shares$16.73--
Cartesian Therapeutics, Inc.RNAC$90M8.6M sharesBuyApr 10, 2025$83.1K8k shares$10.43--
Cartesian Therapeutics, Inc.RNAC$6.8M620.2k sharesBuyApr 10, 2025$37.7K3.5k shares$10.92--
Cartesian Therapeutics, Inc.RNAC$94M8.6M sharesBuyApr 10, 2025$6.7K609 shares$10.92--
Cartesian Therapeutics, Inc.RNAC$5.4M571.4k sharesBuyApr 9, 2025$392.2K41.6k shares$9.43--
Tectonic Therapeutic, Inc.TECX$20M1.4M sharesBuyApr 9, 2025$237.1K16.2k shares$14.62--
Cartesian Therapeutics, Inc.RNAC$5.7M571.6k sharesBuyApr 9, 2025$1.8K178 shares$9.95--
Cartesian Therapeutics, Inc.RNAC$86M8.6M sharesBuyApr 9, 2025$30831 shares$9.95--
Tectonic Therapeutic, Inc.TECX$21M1.4M sharesBuyApr 9, 2025$74.0K4.9k shares$15.23--
Cartesian Therapeutics, Inc.RNAC$81M8.6M sharesBuyApr 9, 2025$69.2K7.3k shares$9.43--
Tectonic Therapeutic, Inc.TECX$63M4.3M sharesBuyApr 9, 2025$41.8K2.9k shares$14.62--
Tectonic Therapeutic, Inc.TECX$66M4.3M sharesBuyApr 9, 2025$13.1K857 shares$15.23--
Tectonic Therapeutic, Inc.TECX$24M1.4M sharesBuyApr 7, 2025$7.1M412.5k shares$17.10--
Tectonic Therapeutic, Inc.TECX$74M4.3M sharesBuyApr 7, 2025$1.5M87.5k shares$17.10--
Cartesian Therapeutics, Inc.RNAC$134M8.6M sharesBuyMar 20, 2025$855.6K54.9k shares$15.59--
Cartesian Therapeutics, Inc.RNAC$128M8.6M sharesBuyMar 19, 2025$303.0K20.2k shares$14.97--
Cartesian Therapeutics, Inc.RNAC$123M8.5M sharesBuyMar 18, 2025$212.6K14.7k shares$14.42--
Tectonic Therapeutic, Inc.TECX$49M970.2k sharesBuyFeb 5, 2025$33.0M660k shares$50.00--
Tectonic Therapeutic, Inc.TECX$229M4.2M sharesBuyFeb 5, 2025$7.0M129.3k shares$54.14--
Cartesian Therapeutics, Inc.RNAC$154M8.5M sharesBuyJan 14, 2025$72.4K4k shares$18.00--
Cartesian Therapeutics, Inc.RNAC$152M8.5M sharesBuyJan 13, 2025$159.7K9k shares$17.78--
Cartesian Therapeutics, Inc.RNAC$144M8.5M sharesBuyJan 13, 2025$134.2K8k shares$16.86--
Cartesian Therapeutics, Inc.RNAC--8.5M sharesGrant / ExerciseJan 2, 2025Disclosure amount unavailable2.6k shares----
Cartesian Therapeutics, Inc.RNAC$132k7.8k sharesGrant / ExerciseJan 2, 2025$132.1K7.8k shares$16.93--
Cartesian Therapeutics, Inc.RNAC$162M8.5M sharesBuyDec 23, 2024$98.4K5.2k shares$19.00--
Cartesian Therapeutics, Inc.RNAC$161M8.5M sharesBuyDec 20, 2024$413.0K21.8k shares$18.94--
Cartesian Therapeutics, Inc.RNAC$147M8.5M sharesBuyDec 19, 2024$196.5K11.3k shares$17.39--
Cartesian Therapeutics, Inc.RNAC$156M8.5M sharesBuyDec 19, 2024$193.2K10.5k shares$18.35--
Cartesian Therapeutics, Inc.RNAC$161M8.5M sharesBuyDec 19, 2024$63.9K3.4k shares$18.93--
Cartesian Therapeutics, Inc.RNAC$151M8.4M sharesBuyNov 18, 2024$684.4K38.1k shares$17.96--
Cartesian Therapeutics, Inc.RNAC$156M8.5M sharesBuyNov 18, 2024$371.7K20.2k shares$18.42--
Cartesian Therapeutics, Inc.RNAC$144M8.4M sharesBuyNov 15, 2024$4.7M277.2k shares$17.09--
Cartesian Therapeutics, Inc.RNAC$131M8.1M sharesBuyNov 14, 2024$1.2M74.2k shares$16.19--
Cartesian Therapeutics, Inc.RNAC$138M8.1M sharesBuyNov 14, 2024$377.4K22.2k shares$16.97--
Tectonic Therapeutic, Inc.TECX$138M4.1M sharesBuyOct 22, 2024$10.1M300k shares$33.59--
Cartesian Therapeutics, Inc.RNAC$179M8M sharesBuyOct 4, 2024$1.1M48.9k shares$22.35--
Cartesian Therapeutics, Inc.RNAC$189M8M sharesBuyOct 4, 2024$392.4K16.7k shares$23.57--
Cartesian Therapeutics, Inc.RNAC$170M8M sharesBuyOct 4, 2024$211.2K9.9k shares$21.35--
Cartesian Therapeutics, Inc.RNAC$192M8M sharesBuyOct 4, 2024$116.8K4.9k shares$23.93--
Cartesian Therapeutics, Inc.RNAC$160M7.9M sharesBuyOct 3, 2024$1.0M50.5k shares$20.18--
Cartesian Therapeutics, Inc.RNAC$143M7.9M sharesBuyOct 3, 2024$544.6K29.8k shares$18.25--
Cartesian Therapeutics, Inc.RNAC$168M7.9M sharesBuyOct 3, 2024$450.6K21.3k shares$21.17--
Cartesian Therapeutics, Inc.RNAC$150M7.9M sharesBuyOct 3, 2024$194.9K10.2k shares$19.01--
Cartesian Therapeutics, Inc.RNAC$174M7.9M sharesBuyOct 3, 2024$175.8K8k shares$21.86--
Cartesian Therapeutics, Inc.RNAC$1.6M33.4k sharesOtherOct 2, 2024$6.2M133.6k shares$46.50--
Cartesian Therapeutics, Inc.RNAC$5.3M113.6k sharesOtherOct 2, 2024$5.3M113.6k shares$46.50--
Cartesian Therapeutics, Inc.RNAC$932k20k sharesOtherOct 2, 2024$932.1K20k shares$46.50--
Cartesian Therapeutics, Inc.RNAC--330.7k sharesOtherOct 2, 2024Disclosure amount unavailable317.9k shares----
Cartesian Therapeutics, Inc.RNAC--529.8k sharesOtherOct 2, 2024Disclosure amount unavailable2.1M shares----
Cartesian Therapeutics, Inc.RNAC--7.8M sharesOtherOct 2, 2024Disclosure amount unavailable1.8M shares----
Cartesian Therapeutics, Inc.RNAC$136M7.8M sharesBuyOct 2, 2024$95.8K5.5k shares$17.38--
Tectonic Therapeutic, Inc.TECX$106M3.8M sharesBuySep 26, 2024$690.8K24.5k shares$28.16--
Tectonic Therapeutic, Inc.TECX$110M3.8M sharesBuySep 26, 2024$553.4K19k shares$29.13--
Tectonic Therapeutic, Inc.TECX$114M3.8M sharesBuySep 26, 2024$122.5K4.1k shares$30.10--
Tectonic Therapeutic, Inc.TECX$117M3.8M sharesBuySep 26, 2024$74.1K2.4k shares$30.87--
Cartesian Therapeutics, Inc.RNAC--1.3k sharesGrant / ExerciseSep 25, 2024Disclosure amount unavailable1.3k shares----
Cartesian Therapeutics, Inc.RNAC--2.6M sharesGrant / ExerciseSep 25, 2024Disclosure amount unavailable721.4k shares----
Cartesian Therapeutics, Inc.RNAC--6M sharesGrant / ExerciseSep 25, 2024Disclosure amount unavailable1.6M shares----
Tectonic Therapeutic, Inc.TECX--186.1k sharesOtherSep 24, 2024Disclosure amount unavailable186.1k shares----
Tectonic Therapeutic, Inc.TECX--310.2k sharesOtherSep 24, 2024Disclosure amount unavailable1.2M shares----
Tectonic Therapeutic, Inc.TECX--3.7M sharesOtherSep 24, 2024Disclosure amount unavailable1.1M shares----
Cartesian Therapeutics, Inc.RNAC$146k11.5k sharesBuyAug 12, 2024$102.0K8k shares$12.72--
Cartesian Therapeutics, Inc.RNAC$33M1.6M sharesGrant / ExerciseJul 2, 2024$32.7M1.6M shares$20.00--
Cartesian Therapeutics, Inc.RNAC$14M721.4k sharesGrant / ExerciseJul 2, 2024$14.4M721.4k shares$20.00--
Cartesian Therapeutics, Inc.RNAC$26k1.3k sharesGrant / ExerciseJul 2, 2024$26.1K1.3k shares$20.00--
Tectonic Therapeutic, Inc.TECX$198k11.8k sharesGrant / ExerciseJun 20, 2024$197.6K11.8k shares$16.80--
Tectonic Therapeutic, Inc.TECX--1.6M sharesGrant / ExerciseJun 20, 2024Disclosure amount unavailable1.6M shares----
Tectonic Therapeutic, Inc.TECX--2.7M sharesGrant / ExerciseJun 20, 2024Disclosure amount unavailable2.7M shares----