Tirtha Chakraborty
CIK 1840685 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 4, 2021 · Latest: Feb. 4, 2021
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 1, 2024 | VOR | F | 5,576 | $2.27 | $12,658 | 181,093 Direct | -2.99% | Disposed | -49.6% (price as of 2026-08-20) |
| Feb. 6, 2024 | VOR | F | 1,033 | $2.32 | $2,397 | 186,669 Direct | -0.55% | Disposed | -50.6% (price as of 2026-08-20) |
| Jan. 29, 2024 | VOR | A | 53,750 | — | — | 187,702 Direct | +40.13% | Acquired | (price as of 2026-08-20) |
| Jan. 29, 2024 | VOR | A | 107,500 | — | — | 107,500 Direct | — | Acquired | (price as of 2026-08-20) |
| Nov. 6, 2023 | VOR | F | 876 | $1.82 | $1,594 | 133,952 Direct | -0.65% | Disposed | -37.1% (price as of 2026-08-20) |
| Sept. 1, 2023 | VOR | F | 5,576 | $2.67 | $14,888 | 134,828 Direct | -3.97% | Disposed | -57.1% (price as of 2026-08-20) |
| Aug. 7, 2023 | VOR | F | 875 | $2.67 | $2,336 | 140,404 Direct | -0.62% | Disposed | -57.1% (price as of 2026-08-20) |
| May 8, 2023 | VOR | F | 875 | $4.14 | $3,622 | 141,279 Direct | -0.62% | Disposed | -72.3% (price as of 2026-08-20) |
| March 1, 2023 | VOR | F | 5,576 | $5.51 | $30,724 | 142,154 Direct | -3.77% | Disposed | -79.2% (price as of 2026-08-20) |
| Feb. 6, 2023 | VOR | A | 95,500 | — | — | 95,500 Direct | — | Acquired | (price as of 2026-08-20) |
| Feb. 6, 2023 | VOR | A | 47,750 | — | — | 147,730 Direct | +47.76% | Acquired | (price as of 2026-08-20) |
| Sept. 1, 2022 | VOR | A | 76,000 | — | — | 76,000 Direct | — | Acquired | (price as of 2026-08-20) |
| Sept. 1, 2022 | VOR | A | 76,000 | — | — | 96,980 Direct | +362.25% | Acquired | (price as of 2026-08-20) |
| Feb. 1, 2022 | VOR | A | 101,000 | — | — | 101,000 Direct | — | Acquired | (price as of 2026-08-20) |
| Aug. 17, 2021 | VOR | M | 17,446 | — | — | 28,800 Direct | -37.72% | Disposed | (price as of 2026-08-20) |
| Aug. 17, 2021 | VOR | M | 17,446 | $1.36 | $23,727 | 20,980 Direct | +493.66% | Acquired | -15.8% (price as of 2026-08-20) |
| Feb. 9, 2021 | VOR | C | 48,076 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Feb. 9, 2021 | VOR | C | 3,534 | — | — | 3,534 Direct | — | Acquired | (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| Jan. 29, 2024 | VOR | Employee Stock Option (right to buy) | Common Stock (107,500) | $2.41 | Jan. 28, 2034 | 107,500 | Acquired |
| Feb. 6, 2023 | VOR | Employee Stock Option (right to buy) | Common Stock (95,500) | $5.55 | Feb. 5, 2033 | 95,500 | Acquired |
| Sept. 1, 2022 | VOR | Employee Stock Option (right to buy) | Common Stock (76,000) | $5.31 | Aug. 31, 2032 | 76,000 | Acquired |
| Feb. 1, 2022 | VOR | Employee Stock Option (right to buy) | Common Stock (101,000) | $8.63 | Jan. 31, 2032 | 101,000 | Acquired |
| Aug. 17, 2021 | VOR | Employee Stock Option (right to buy) | Common Stock (17,446) | $1.36 | Sept. 24, 2029 | 17,446 | Disposed |
| Feb. 9, 2021 | VOR | Series B Preferred Stock | Common Stock (3,534) | — | — | 48,076 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 4, 2021 | VOR | Series B Preferred Stock→ Common Stock (3,534) | 3,534 | Direct |
| Feb. 4, 2021 | VOR | Employee Stock Option (right to buy)→ Common Stock (46,246) | 46,246 | Direct |
| Feb. 4, 2021 | VOR | Employee Stock Option (right to buy)→ Common Stock (24,410) | 24,410 | Direct |
| Feb. 4, 2021 | VOR | Employee Stock Option (right to buy)→ Common Stock (70,656) | 70,656 | Direct |
| Feb. 4, 2021 | VOR | Employee Stock Option (right to buy)→ Common Stock (121,323) | 121,323 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
VOR
Ph.D.(10) Former Chief Scientific Officer and Head of Technical Operations| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2024 | $477,200 | — | $129,538 | $197,800 | $190,379 | — | $8,935 | $1,003,852 |
| 2023 | $465,500 | — | — | — | $179,171 | — | $17,305 | $1,309,944 |
| 2022 | $430,000 | — | — | — | $172,602 | — | $20,353 | $1,892,985 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.