Springer Timothy A

SEC CIK: 0001055624

SEC filings (opens in a new tab)

No open-market purchases or sales filed in the past year.

Current role at each company

TECX Tectonic Therapeutic, Inc.Director, 10% Owneras of Jun 10, 2026
RNAC Cartesian Therapeutics, Inc.Director, 10% Owneras of Jan 6, 2026
MORF Morphic Holding, Inc.Director, 10% Owneras of Aug 20, 2024

Open-market trades in the past year

Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.

Bought: –; 0 filings
Sold: –; 0 filings
Net: –; Bought minus sold
Companies: 0; With open-market trades

Trades

Every Form 4 that lists Springer Timothy A as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.

Transaction type

Role

Minimum value (USD)

Filed from

Filed to

Filing delay at least (days)

Filing delay at most (days)

RNAC Cartesian Therapeutics, Inc.

Director, 10% Owner14 trades

Insider trades
Filed (ET)	Trade date	Filing delay	Insider	Transaction	Shares	Avg price	Value	Holding change	Flags
Apr 11, 2025 (view filing)	Apr 9-11	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+22.4K	$10.21	+$228.3K	+0.3%8.64M after	5 lots
Apr 11, 2025 (view filing)	Apr 9-11	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+126.7K	$10.21	+$1.29M	+23.9%656.5K after	5 lots
Mar 20, 2025 (view filing)	Mar 18-20	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+89.9K	$15.26	+$1.37M	+1.1%8.62M after	3 lots
Jan 15, 2025 (view filing)	Jan 13-14	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+21.0K	$17.47	+$366.4K	+0.2%8.53M after	3 lots
Dec 23, 2024 (view filing)	Dec 19-23	4 days	Springer Timothy ADirector, 10% Owner	PPurchase	+52.2K	$18.49	+$965.0K	+0.6%8.51M after	5 lots
Nov 18, 2024 (view filing)	Nov 14-18	4 days	Springer Timothy ADirector, 10% Owner	PPurchase	+431.9K	$17.07	+$7.37M	+5.4%8.46M after	5 lots
Oct 4, 2024 (view filing)	Oct 2-4	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+205.7K	$20.87	+$4.29M	+2.6%8.02M after	10 lots
Aug 14, 2024 (view filing)	Aug 12	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+8.02K	$12.72	+$102.0K	+229.5%11.5K after
Mar 28, 2024 (view filing)	Jan 17-Mar 18	71 daysLate	Springer Timothy ADirector, 10% Owner	PPurchase	+18.4K	$0.6202	+$11.4K	+21.3%104.8K after	10 lots
Mar 20, 2024 (view filing)	Mar 18	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+19.0K	$0.60	+$11.4K	+0.1%31.1M after

See all 14 trades at RNAC

TECX Tectonic Therapeutic, Inc.

Director, 10% Owner8 trades

Insider trades
Filed (ET)	Trade date	Filing delay	Insider	Transaction	Shares	Avg price	Value	Holding change	Flags
Apr 11, 2025 (view filing)	Apr 9-11	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+21.3K	$16.20	+$344.8K	+0.5%4.33M after	4 lots
Apr 11, 2025 (view filing)	Apr 9-11	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+120.6K	$16.20	+$1.95M	+8.7%1.50M after	4 lots
Apr 9, 2025 (view filing)	Apr 7	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+87.5K	$17.10	+$1.50M	+2.1%4.31M after
Apr 9, 2025 (view filing)	Apr 7	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+412.5K	$17.10	+$7.05M	+42.5%1.38M after
Feb 7, 2025 (view filing)	Feb 5	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+129.3K	$54.14	+$7.00M	+3.2%4.23M after
Feb 7, 2025 (view filing)	Feb 5	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+660.0K	$50.00	+$33.0M	+212.8%970.2K after
Oct 24, 2024 (view filing)	Oct 22	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+300.0K	$33.59	+$10.1M	+7.9%4.10M after
Sep 26, 2024 (view filing)	Sep 26	Same day	Springer Timothy ADirector, 10% Owner	PPurchase	+50.0K	$28.82	+$1.44M	+1.3%3.80M after	4 lots

MORF Morphic Holding, Inc.

Director, 10% Owner2 trades

Insider trades
Filed (ET)	Trade date	Filing delay	Insider	Transaction	Shares	Avg price	Value	Holding change	Flags
May 4, 2023 (view filing)	May 3	1 day	Springer Timothy ADirector, 10% Owner	PPurchase	+1.05M	$45.00	+$47.3M	+61.1%2.77M after
Aug 20, 2021 (view filing)	Aug 18-20	2 days	Springer Timothy ADirector, 10% Owner	PPurchase	+74.9K	$56.23	+$4.21M	+8.9%912.2K after	7 lots