As of the latest Form 4 filed Mar 23, 2026.
What Kalaris Therapeutics, Inc. insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 68 most recent filings for KLRS.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-03-23 | 2026-03-20 | Hagen Brett R Chief Accounting Officer | SSale | −1.92K | $6.72 | $12.9K | No | Form 4 ↗ |
| 2025-12-22 | 2025-12-22 | AKKARAJU SRINIVAS Director | AAward | +1.50M | $10.00 | $15.0M | No | Form 4 ↗ |
| 2025-03-27 | 2025-03-26 | Hagen Brett R Chief Accounting Officer | SSale | −907.00 | $8.97 | $8.14K | No | Form 4 ↗ |
| 2025-02-24 | 2025-02-21 | Sinha Vikas See Remarks | SSale | −303.00 | $10.08 | $3.05K | No | Form 4 ↗ |
| 2025-02-24 | 2025-02-21 | Hagen Brett R Chief Accounting Officer | SSale | −96.00 | $10.08 | $967.28 | No | Form 4 ↗ |
| 2025-02-24 | 2025-02-21 | Miller Edward General Counsel | SSale | −106.00 | $10.08 | $1.07K | No | Form 4 ↗ |
| 2025-01-27 | 2025-01-23 | Miller Edward General Counsel | SSale | −5.00 | $9.94 | $49.70 | No | Form 4 ↗ |
| 2025-01-27 | 2025-01-23 | Miller Edward, General Counsel | SSale | −47.00 | $9.45 | $444.33 | No | Form 4 ↗ |
| 2025-01-27 | 2025-01-23 | Hagen Brett R Chief Accounting Officer | SSale | −4.00 | $9.94 | $39.76 | No | Form 4 ↗ |
| 2025-01-27 | 2025-01-23 | Hagen Brett R, Chief Accounting Officer | SSale | −32.00 | $9.45 | $302.52 | No | Form 4 ↗ |
| 2025-01-27 | 2025-01-23 | Sinha Vikas See Remarks | SSale | −13.00 | $9.94 | $129.22 | No | Form 4 ↗ |
| 2025-01-27 | 2025-01-23 | Sinha Vikas, See Remarks | SSale | −116.00 | $9.45 | $1.10K | No | Form 4 ↗ |
| 2025-01-13 | 2025-01-10 | Miller Edward General Counsel | SSale | −409.00 | $0.44 | $180.00 | No | Form 4 ↗ |
| 2025-01-13 | 2025-01-10 | Hagen Brett R Chief Accounting Officer | SSale | −332.00 | $0.44 | $146.11 | No | Form 4 ↗ |
| 2025-01-13 | 2025-01-10 | Sinha Vikas See Remarks | SSale | −979.00 | $0.44 | $430.86 | No | Form 4 ↗ |
| 2024-12-11 | 2024-12-11 | Miller Edward General Counsel | GGift | +57.5K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-12-11 | 2024-12-11 | Miller Edward, General Counsel | GGift | −57.5K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-11-20 | 2024-11-19 | Hagen Brett R Chief Accounting Officer | SSale | −554.00 | $0.55 | $303.87 | No | Form 4 ↗ |
| 2024-11-20 | 2024-11-19 | Sinha Vikas See Remarks | SSale | −3.19K | $0.55 | $1.75K | No | Form 4 ↗ |
| 2024-11-20 | 2024-11-19 | Miller Edward General Counsel | SSale | −432.00 | $0.55 | $236.95 | No | Form 4 ↗ |
| 2024-11-20 | 2024-11-19 | Brainard Diana Chief Executive Officer | SSale | −8.71K | $0.55 | $4.78K | No | Form 4 ↗ |
| 2024-11-06 | 2024-11-05 | Brainard Diana Chief Executive Officer | SSale | −10.6K | $0.86 | $9.18K | No | Form 4 ↗ |
| 2024-11-06 | 2024-11-05 | Miller Edward General Counsel | SSale | −2.27K | $0.86 | $1.97K | No | Form 4 ↗ |
| 2024-11-06 | 2024-11-05 | Hagen Brett R Chief Accounting Officer | SSale | −1.66K | $0.86 | $1.43K | No | Form 4 ↗ |
| 2024-11-06 | 2024-11-05 | Sinha Vikas See Remarks | SSale | −5.14K | $0.86 | $4.44K | No | Form 4 ↗ |
| 2024-10-23 | 2024-10-22 | Sinha Vikas See Remarks | SSale | −1.88K | $0.77 | $1.44K | No | Form 4 ↗ |
| 2024-10-23 | 2024-10-22 | Hagen Brett R Chief Accounting Officer | SSale | −486.00 | $0.77 | $373.15 | No | Form 4 ↗ |
| 2024-10-23 | 2024-10-22 | Miller Edward General Counsel | SSale | −766.00 | $0.77 | $588.13 | No | Form 4 ↗ |
| 2024-10-23 | 2024-10-21 | Sinha Vikas See Remarks | SSale | −1.55K | $0.78 | $1.20K | No | Form 4 ↗ |
| 2024-10-23 | 2024-10-21 | Hagen Brett R Chief Accounting Officer | SSale | −479.00 | $0.78 | $373.14 | No | Form 4 ↗ |
| 2024-10-23 | 2024-10-21 | Brainard Diana Chief Executive Officer | SSale | −9.75K | $0.78 | $7.60K | No | Form 4 ↗ |
| 2024-10-23 | 2024-10-21 | Miller Edward General Counsel | SSale | −635.00 | $0.78 | $494.67 | No | Form 4 ↗ |
| 2024-10-04 | 2024-10-03 | Sinha Vikas See Remarks | SSale | −940.00 | $0.81 | $765.91 | No | Form 4 ↗ |
| 2024-10-04 | 2024-10-03 | Miller Edward General Counsel | SSale | −377.00 | $0.81 | $307.18 | No | Form 4 ↗ |
| 2024-10-04 | 2024-10-03 | Brainard Diana Chief Executive Officer | SSale | −1.49K | $0.81 | $1.22K | No | Form 4 ↗ |
| 2024-10-04 | 2024-10-03 | Hagen Brett R Chief Accounting Officer | SSale | −301.00 | $0.81 | $245.25 | No | Form 4 ↗ |
| 2024-08-22 | 2024-08-20 | Brainard Diana Chief Executive Officer | SSale | −5.39K | $0.74 | $4.00K | No | Form 4 ↗ |
| 2024-08-20 | 2024-08-19 | Miller Edward General Counsel | SSale | −422.00 | $0.76 | $320.51 | No | Form 4 ↗ |
| 2024-08-20 | 2024-08-19 | Hagen Brett R Chief Accounting Officer | SSale | −544.00 | $0.76 | $413.17 | No | Form 4 ↗ |
| 2024-08-20 | 2024-08-19 | Sinha Vikas See Remarks | SSale | −3.16K | $0.76 | $2.40K | No | Form 4 ↗ |
| 2024-08-20 | 2024-08-19 | Brainard Diana Chief Executive Officer | SSale | −3.09K | $0.76 | $2.35K | No | Form 4 ↗ |
| 2024-08-07 | 2024-08-05 | Sinha Vikas See Remarks | SSale | −5.25K | $0.73 | $3.86K | No | Form 4 ↗ |
| 2024-08-07 | 2024-08-05 | Miller Edward General Counsel | SSale | −2.32K | $0.73 | $1.71K | No | Form 4 ↗ |
| 2024-08-07 | 2024-08-05 | Brainard Diana Chief Executive Officer | SSale | −10.8K | $0.73 | $7.97K | No | Form 4 ↗ |
| 2024-08-07 | 2024-08-05 | Hagen Brett R Chief Accounting Officer | SSale | −1.69K | $0.73 | $1.24K | No | Form 4 ↗ |
| 2024-07-23 | 2024-07-22 | Hagen Brett R Chief Accounting Officer | SSale | −481.00 | $0.74 | $355.56 | No | Form 4 ↗ |
| 2024-07-23 | 2024-07-22 | Sinha Vikas See Remarks | SSale | −1.86K | $0.74 | $1.37K | No | Form 4 ↗ |
| 2024-07-23 | 2024-07-22 | Miller Edward General Counsel | SSale | −757.00 | $0.74 | $559.57 | No | Form 4 ↗ |
| 2024-07-23 | 2024-07-19 | Hagen Brett R Chief Accounting Officer | SSale | −479.00 | $0.75 | $359.30 | No | Form 4 ↗ |
| 2024-07-23 | 2024-07-19 | Brainard Diana Chief Executive Officer | SSale | −9.73K | $0.75 | $7.30K | No | Form 4 ↗ |
| 2024-07-23 | 2024-07-19 | Sinha Vikas See Remarks | SSale | −1.54K | $0.75 | $1.16K | No | Form 4 ↗ |
| 2024-07-23 | 2024-07-19 | Miller Edward General Counsel | SSale | −634.00 | $0.75 | $475.56 | No | Form 4 ↗ |
| 2024-07-03 | 2024-07-02 | Miller Edward General Counsel | SSale | −379.00 | $0.72 | $272.88 | No | Form 4 ↗ |
| 2024-07-03 | 2024-07-02 | Sinha Vikas See Remarks | SSale | −939.00 | $0.72 | $676.08 | No | Form 4 ↗ |
| 2024-07-03 | 2024-07-02 | Hagen Brett R Chief Accounting Officer | SSale | −304.00 | $0.72 | $218.88 | No | Form 4 ↗ |
| 2024-07-03 | 2024-07-02 | Brainard Diana Chief Executive Officer | SSale | −1.49K | $0.72 | $1.07K | No | Form 4 ↗ |
| 2024-06-07 | 2024-06-06 | Jovan-Embiricos Morana Director | AAward | +35.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-06-07 | 2024-06-06 | Adams Derek N. Director | AAward | +35.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-06-07 | 2024-06-06 | Hallal David Director | AAward | +35.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-06-07 | 2024-06-06 | Bornstein Jeffrey S Director | AAward | +35.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-06-07 | 2024-06-06 | Vera Juan Director | AAward | +35.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-06-07 | 2024-06-06 | Tomasello Shawn Director | AAward | +35.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-06-07 | 2024-06-06 | Brenner Malcolm Director | AAward | +35.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-05-23 | 2024-05-21 | Brainard Diana Chief Executive Officer | SSale | −5.15K | $0.79 | $4.08K | No | Form 4 ↗ |
| 2024-05-21 | 2024-05-17 | Hagen Brett R Chief Accounting Officer | SSale | −541.00 | $0.75 | $405.37 | No | Form 4 ↗ |
| 2024-05-21 | 2024-05-17 | Brainard Diana Chief Executive Officer | SSale | −3.08K | $0.75 | $2.30K | No | Form 4 ↗ |
| 2024-05-21 | 2024-05-17 | Sinha Vikas See Remarks | SSale | −3.14K | $0.75 | $2.36K | No | Form 4 ↗ |
| 2024-05-21 | 2024-05-17 | Miller Edward General Counsel | SSale | −420.00 | $0.75 | $314.71 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also KLRS’s full analysis or the market-wide insider trading feed. The tabs above jump to KLRS’s other SEC data.
Source: SEC Form 4 filings for KLRS, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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