Timothy A. Springer

CIK 1055624 · View on SEC EDGAR ↗

Insider Activist

First SEC filing: April 7, 2025 · Latest: June 10, 2026

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 18 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

18 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Jan. 25, 2019 RNAC P 66,666 $1.50 $99,999 76,418 Indirect +683.61% Acquired -78.5% (price as of 2026-08-19)
Jan. 25, 2019 RNAC P 4,000,000 $1.50 $6,000,000 4,456,597 Direct +876.05% Acquired -78.5% (price as of 2026-08-19)
May 29, 2018 SRRK P 71,428 $14.00 $999,992 3,273,519 Direct +2.23% Acquired 294.6% (price as of 2026-08-19)
Nov. 10, 2017 RNAC P 4,752 $9.03 $42,911 9,752 Indirect +95.04% Acquired -96.4% (price as of 2026-08-19)
May 18, 2017 RNAC P 4,860 $14.00 $68,040 16,104 Direct +43.22% Acquired -97.7% (price as of 2026-08-19)
May 17, 2017 RNAC P 11,244 $14.01 $157,528 11,244 Direct — Acquired -97.7% (price as of 2026-08-19)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
June 9, 2026 TECX Stock Option (Right to Buy) Common Stock (10,200) $28.56 June 8, 2036 10,200 Acquired
Dec. 23, 2019 RNAC Warrants Common Stock (1,970,443) $1.46 Dec. 23, 2024 1,970,443 Acquired
June 22, 2018 SRRK Stock Option (right to buy) Common Stock (20,316) $21.62 June 22, 2028 20,316 Acquired
May 29, 2018 SRRK Series A-4 Preferred Common Stock (275,903) — — 787,649 Disposed
May 29, 2018 SRRK Series C Preferred Common Stock (299,632) — — 855,391 Disposed
May 29, 2018 SRRK Series B Preferred Common Stock (733,808) — — 2,094,875 Disposed
May 29, 2018 SRRK Series A-3 Preferred Common Stock (507,662) — — 1,449,275 Disposed
May 29, 2018 SRRK Series A-2 Preferred Common Stock (522,556) — — 1,491,792 Disposed
May 29, 2018 SRRK Series A-1 Preferred Common Stock (350,287) — — 1,000,000 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 7 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
May 23, 2018 SRRK Common Stock 788,146 Direct
May 23, 2018 SRRK Series A-1 Preferred Stock→ Common Stock (350,287) 350,287 Direct
May 23, 2018 SRRK Series A-2 Preferred Stock→ Common Stock (522,556) 522,556 Direct
May 23, 2018 SRRK Series A-3 Preferred Stock→ Common Stock (507,662) 507,662 Direct
May 23, 2018 SRRK Series B Preferred Stock→ Common Stock (733,808) 733,808 Direct
May 23, 2018 SRRK Series C Preferred Stock→ Common Stock (299,632) 299,632 Direct
May 23, 2018 SRRK Series A-4 Preferred Stock→ Common Stock (275,903) 275,903 Indirect