- Corporate Officers - S
- Springer Timothy A
Insider Trading History of Springer Timothy A
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Springer Timothy A since 2016.
This trader's CIK number is 1055624.
At the time of last reporting, Springer Timothy A was the Director of Tectonic Therapeutic, Inc.. (stock ticker symbol TECX).
Also see all insider trading activities at Tectonic Therapeutic, Inc..
Note that in the past
SPRINGER TIMOTHY A also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Morphic Holding, Inc. (MORF) by Springer Timothy A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2023 | MORF | 1,050,000 | $47,250,000 | 0 | $0 | 0 | $0 |
| 2021 | MORF | 537,222 | $27,785,777 | 0 | $0 | 0 | $0 |
| 2019 | MORF | 33,333 | $499,995 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Tectonic Therapeutic, Inc. (TECX) by Springer Timothy A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | TECX | 1,431,217 | $51,951,627 | 0 | $0 | 0 | $0 |
| 2024 | TECX | 350,000 | $11,555,250 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Cartesian Therapeutics, Inc. (RNAC) by Springer Timothy A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | RNAC | 259,905 | $3,284,375 | 0 | $0 | 0 | $0 |
| 2024 | RNAC | 1,868,993 | $12,524,910 | 0 | $0 | 11,795,168 | $2,876,846 |
| 2022 | RNAC | 6,681,600 | $0 | 0 | $0 | 0 | $0 |
| 2021 | RNAC | 8,705,942 | $28,225,925 | 0 | $0 | 0 | $0 |
| 2020 | RNAC | 8,994,485 | $19,890,436 | 0 | $0 | 0 | $0 |
| 2019 | RNAC | 4,081,418 | $6,160,324 | 0 | $0 | 0 | $0 |
| 2017 | RNAC | 466,349 | $7,262,444 | 0 | $0 | 0 | $0 |
| 2016 | RNAC | 710,000 | $9,940,000 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Scholar Rock Holding Corp (SRRK) by Springer Timothy A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2018 | SRRK | 71,428 | $999,992 | 0 | $0 | 0 | $0 |
Insider trading activities at 4 companies by Springer Timothy A:
1. Morphic Holding, Inc. (MORF)
2. Tectonic Therapeutic, Inc. (TECX)
3. Cartesian Therapeutics, Inc. (RNAC)
4. Scholar Rock Holding Corp (SRRK)
Table 1. Insider trading of Morphic Holding, Inc. (MORF) by Springer Timothy A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2023-05-03 | MORF | Buy | 1,050,000 | 45.00 | 47,250,000 |
| 2021-08-18 | MORF | Buy | 30,307 | 55.88 | 1,693,706 |
| 2021-08-20 | MORF | Buy | 11,620 | 56.41 | 655,426 |
| 2021-08-19 | MORF | Buy | 33,000 | 55.95 | 1,846,218 |
| 2021-05-26 | MORF | Buy | 25,000 | 47.15 | 1,178,650 |
| 2021-05-25 | MORF | Buy | 65,000 | 45.97 | 2,988,115 |
| 2021-05-24 | MORF | Buy | 40,000 | 46.36 | 1,854,240 |
| 2021-05-21 | MORF | Buy | 232,295 | 45.50 | 10,569,422 |
| 2021-03-05 | MORF | Buy | 100,000 | 70.00 | 7,000,000 |
| 2019-07-01 | MORF | Buy | 33,333 | 15.00 | 499,995 |
Table 2. Insider trading of Tectonic Therapeutic, Inc. (TECX) by Springer Timothy A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-04-09 | TECX | Buy | 24,789 | 14.93 | 369,975 |
| 2025-04-10 | TECX | Buy | 53,950 | 16.73 | 902,583 |
| 2025-04-11 | TECX | Buy | 63,184 | 16.31 | 1,030,531 |
| 2025-04-07 | TECX | Buy | 500,000 | 17.10 | 8,550,000 |
| 2025-02-05 | TECX | Buy | 789,294 | 52.07 | 41,098,538 |
| 2024-10-22 | TECX | Buy | 300,000 | 33.59 | 10,077,000 |
| 2024-09-26 | TECX | Buy | 50,000 | 29.57 | 1,478,250 |
Table 3. Insider trading of Cartesian Therapeutics, Inc. (RNAC) by Springer Timothy A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-04-09 | RNAC | Buy | 49,155 | 9.69 | 476,262 |
| 2025-04-10 | RNAC | Buy | 57,170 | 10.68 | 610,518 |
| 2025-04-11 | RNAC | Buy | 42,750 | 10.77 | 460,545 |
| 2025-03-20 | RNAC | Buy | 54,889 | 15.59 | 855,609 |
| 2025-03-19 | RNAC | Buy | 20,234 | 14.97 | 302,963 |
| 2025-03-18 | RNAC | Buy | 14,740 | 14.42 | 212,595 |
| 2025-01-13 | RNAC | Buy | 16,945 | 17.32 | 293,487 |
| 2025-01-14 | RNAC | Buy | 4,022 | 18.00 | 72,396 |
| 2024-11-18 | RNAC | Buy | 58,295 | 18.19 | 1,060,327 |
| 2024-11-15 | RNAC | Buy | 277,246 | 17.09 | 4,739,243 |
| 2024-11-14 | RNAC | Buy | 96,399 | 16.58 | 1,598,391 |
| 2024-10-04 | RNAC | Buy | 80,301 | 22.80 | 1,830,943 |
| 2024-10-03 | RNAC | Buy | 119,906 | 20.09 | 2,409,511 |
| 2024-10-02 | RNAC | Buy | 5,514 | 17.38 | 95,822 |
| 2024-09-25 | RNAC | Option Ex | 4,719,000 | .00 | 0 |
| 2024-08-12 | RNAC | Buy | 8,016 | 12.72 | 101,971 |
| 2024-04-08 | RNAC | Option Ex | 5,105,725 | .00 | 0 |
| 2024-03-13 | RNAC | Buy | 3,200 | .58 | 1,868 |
| 2024-03-14 | RNAC | Buy | 2,000 | .53 | 1,062 |
| 2024-03-15 | RNAC | Buy | 1,200 | .56 | 672 |
| 2024-03-18 | RNAC | Buy | 800 | .61 | 488 |
| 2024-03-12 | RNAC | Buy | 1,200 | .61 | 734 |
| 2024-03-11 | RNAC | Buy | 1,200 | .65 | 784 |
| 2024-03-08 | RNAC | Buy | 4,800 | .66 | 3,187 |
| 2024-01-17 | RNAC | Buy | 800 | .69 | 552 |
| 2024-02-07 | RNAC | Buy | 2,400 | .66 | 1,574 |
| 2024-02-06 | RNAC | Buy | 800 | .65 | 520 |
| 2024-03-26 | RNAC | Option Ex | 1,970,443 | 1.46 | 2,876,846 |
| 2024-03-18 | RNAC | Buy | 19,044 | .60 | 11,407 |
| 2024-03-14 | RNAC | Buy | 648,372 | .54 | 351,417 |
| 2024-03-15 | RNAC | Buy | 537,500 | .58 | 314,437 |
| 2022-04-11 | SELB | Buy | 6,681,600 | .00 | 0 |
| 2021-12-15 | SELB | Buy | 211,190 | 2.99 | 631,035 |
| 2021-12-09 | SELB | Buy | 3,748,000 | 3.06 | 11,468,880 |
| 2021-12-10 | SELB | Buy | 58,681 | 2.99 | 175,456 |
| 2021-12-13 | SELB | Buy | 14,592 | 2.98 | 43,498 |
| 2021-05-26 | SELB | Buy | 926,170 | 4.00 | 3,705,606 |
| 2021-05-25 | SELB | Buy | 383,830 | 3.55 | 1,362,212 |
| 2021-05-24 | SELB | Buy | 590,000 | 3.38 | 1,991,840 |
| 2021-05-21 | SELB | Buy | 2,773,479 | 3.19 | 8,847,398 |
| 2020-10-21 | SELB | Buy | 880,000 | 2.50 | 2,199,120 |
| 2020-10-22 | SELB | Buy | 1,770,204 | 2.63 | 4,657,406 |
| 2020-10-23 | SELB | Buy | 994,488 | 2.71 | 2,700,034 |
| 2020-10-20 | SELB | Buy | 910,000 | 2.21 | 2,012,920 |
| 2020-10-19 | SELB | Buy | 759,500 | 2.36 | 1,794,698 |
| 2020-10-16 | SELB | Buy | 218,196 | 2.42 | 528,034 |
| 2020-10-09 | SELB | Buy | 276,703 | 2.00 | 552,575 |
| 2020-10-06 | SELB | Buy | 2,000,000 | 1.68 | 3,366,000 |
| 2020-10-07 | SELB | Buy | 654,953 | 1.65 | 1,078,707 |
| 2020-10-08 | SELB | Buy | 530,441 | 1.89 | 1,000,942 |
| 2019-08-14 | SELB | Buy | 10,000 | 1.74 | 17,420 |
| 2019-01-25 | SELB | Buy | 4,066,666 | 1.50 | 6,099,999 |
| 2017-11-10 | SELB | Buy | 4,752 | 9.03 | 42,905 |
| 2017-11-14 | SELB | Buy | 57,598 | 9.27 | 534,106 |
| 2017-11-09 | SELB | Buy | 27,000 | 9.54 | 257,715 |
| 2017-11-10 | SELB | Buy | 26,338 | 9.04 | 237,990 |
| 2017-06-27 | SELB | Buy | 338,791 | 17.71 | 5,999,988 |
| 2017-06-01 | SELB | Buy | 518 | 13.75 | 7,122 |
| 2017-05-17 | SELB | Buy | 11,244 | 14.01 | 157,483 |
| 2017-05-18 | SELB | Buy | 4,860 | 14.00 | 68,040 |
| 2016-06-27 | SELB | Buy | 710,000 | 14.00 | 9,940,000 |
Table 4. Insider trading of Scholar Rock Holding Corp (SRRK) by Springer Timothy A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2018-05-29 | SRRK | Buy | 71,428 | 14.00 | 999,992 |
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above table cannot be completely guaranteed as to their accuracy.
For more information regarding the trades made by Springer Timothy A
(Director of Tectonic Therapeutic, Inc. at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.