Kristina Burow

CIK 1569248 · View on SEC EDGAR ↗

Insider Activist

First SEC filing: May 6, 2026 · Latest: June 8, 2026

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Insider at

Insider transactions

1 buys (P) 2 sells (S) Net: $4,835,924 + 77 non-open-market transactions below Avg return of open purchases vs now: -40.4% 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

77 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
July 1, 2026 SRRK S 10b5-1 948 $54.28 $51,457 114,657 Direct -0.82% Disposed 1.5% (price as of 2026-08-21)
July 1, 2026 SRRK S 10b5-1 2,105 $53.49 $112,596 115,605 Direct -1.79% Disposed 3.0% (price as of 2026-08-21)
Oct. 27, 2025 NMRA P 1,915,700 $2.61 $4,999,977 6,046,907 Indirect +46.37% Acquired -40.4% (price as of 2026-08-21)
April 2, 2024 BOLD P 133,333 $16.00 $2,133,328 1,181,766 Indirect +12.72% Acquired -81.4% (price as of 2026-08-21)
April 2, 2024 BOLD P 66,667 $16.00 $1,066,672 683,759 Indirect +10.80% Acquired -81.4% (price as of 2026-08-21)
Nov. 14, 2023 NMRA P 3,357 $11.98 $40,217 4,131,207 Indirect +0.08% Acquired -87.0% (price as of 2026-08-21)
Nov. 13, 2023 NMRA P 31,653 $11.75 $371,923 4,127,850 Indirect +0.77% Acquired -86.8% (price as of 2026-08-21)
Nov. 10, 2023 NMRA P 5,431 $11.75 $63,814 4,096,197 Indirect +0.13% Acquired -86.8% (price as of 2026-08-21)
Nov. 10, 2023 NMRA P 11,844 $11.37 $134,666 4,090,766 Indirect +0.29% Acquired -86.3% (price as of 2026-08-21)
Nov. 9, 2023 NMRA P 31,079 $10.53 $327,262 4,078,922 Indirect +0.77% Acquired -85.2% (price as of 2026-08-21)
Nov. 8, 2023 NMRA P 23,124 $11.79 $272,632 4,047,843 Indirect +0.57% Acquired -86.8% (price as of 2026-08-21)
Nov. 8, 2023 NMRA P 69,127 $10.78 $745,189 4,024,719 Indirect +1.75% Acquired -85.6% (price as of 2026-08-21)
Nov. 7, 2023 NMRA P 30,192 $11.50 $347,208 3,955,592 Indirect +0.77% Acquired -86.5% (price as of 2026-08-21)
Nov. 6, 2023 NMRA P 43,082 $11.55 $497,597 3,925,400 Indirect +1.11% Acquired -86.5% (price as of 2026-08-21)
Nov. 3, 2023 NMRA P 22,420 $11.38 $255,140 3,882,318 Indirect +0.58% Acquired -86.3% (price as of 2026-08-21)
Sept. 29, 2023 NMRA P 34,560 $13.98 $483,149 3,859,898 Indirect +0.90% Acquired -88.9% (price as of 2026-08-21)
Sept. 28, 2023 NMRA P 25,110 $13.69 $343,756 3,825,338 Indirect +0.66% Acquired -88.6% (price as of 2026-08-21)
Sept. 28, 2023 NMRA P 16,841 $13.06 $219,943 3,800,228 Indirect +0.45% Acquired -88.1% (price as of 2026-08-21)
Sept. 27, 2023 NMRA P 24,504 $12.31 $301,644 3,783,387 Indirect +0.65% Acquired -87.4% (price as of 2026-08-21)
Sept. 26, 2023 NMRA P 34,000 $11.73 $398,820 3,758,883 Indirect +0.91% Acquired -86.7% (price as of 2026-08-21)
Sept. 25, 2023 NMRA P 29,967 $11.65 $349,116 3,724,883 Indirect +0.81% Acquired -86.7% (price as of 2026-08-21)
Sept. 25, 2023 NMRA P 30,773 $10.80 $332,348 3,694,916 Indirect +0.84% Acquired -85.6% (price as of 2026-08-21)
Sept. 22, 2023 NMRA P 40,000 $11.14 $445,600 3,664,143 Indirect +1.10% Acquired -86.0% (price as of 2026-08-21)

Showing latest 100 of 127 transactions

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 4, 2026 SRRK Stock Option (Right to Buy) Common Stock (4,310) $45.33 June 4, 2036 4,310 Acquired
April 23, 2026 SRRK Stock Option (Right to Buy) Common Stock (18,000) $8.36 June 27, 2034 18,000 Disposed
April 23, 2026 SRRK Stock Option (Right to Buy) Common Stock (36,000) $9.11 June 21, 2033 36,000 Disposed
April 23, 2026 SRRK Stock Option (Right to Buy) Common Stock (28,000) $4.75 May 26, 2032 28,000 Disposed
April 23, 2026 SRRK Stock Option (Right to Buy) Common Stock (7,800) $26.78 May 27, 2031 7,800 Disposed
June 23, 2025 BOLD Stock Option (right to buy) Common Stock (16,000) $1.03 June 22, 2035 16,000 Acquired
May 28, 2025 NMRA Stock Option (Right to Buy) Common Stock (80,000) $0.72 May 27, 2035 80,000 Acquired
May 28, 2025 NMRA Stock Option (Right to Buy) Common Stock (28,571) — June 13, 2034 28,571 Acquired
May 28, 2025 NMRA Stock Option (Right to Buy) Common Stock (46,455) — Sept. 14, 2033 46,455 Acquired
May 28, 2025 NMRA Stock Option (Right to Buy) Common Stock (28,571) $1.69 June 13, 2034 28,571 Disposed
May 28, 2025 NMRA Stock Option (Right to Buy) Common Stock (46,455) $1.69 Sept. 14, 2033 46,455 Disposed
May 22, 2025 SRRK Stock Option (Right to Buy) Common Stock (9,206) $30.46 May 22, 2035 9,206 Acquired
Feb. 13, 2025 NMRA Stock Option (Right to Buy) Common Stock (28,571) — June 13, 2034 28,571 Acquired
Feb. 13, 2025 NMRA Stock Option (Right to Buy) Common Stock (46,455) — Sept. 14, 2033 46,455 Acquired
Feb. 13, 2025 NMRA Stock Option (Right to Buy) Common Stock (28,571) $9.95 June 13, 2034 28,571 Disposed
Feb. 13, 2025 NMRA Stock Option (Right to Buy) Common Stock (46,455) $17.00 Sept. 14, 2033 46,455 Disposed
June 27, 2024 SRRK Stock Option (Right to Buy) Common Stock (18,000) $8.36 June 27, 2034 18,000 Acquired
April 2, 2024 BOLD Series C Convertible Preferred Stock Common Stock (366,301) — — 366,301 Disposed
April 2, 2024 BOLD Series C Convertible Preferred Stock Common Stock (201,465) — — 201,465 Disposed
April 2, 2024 BOLD Series C Convertible Preferred Stock Common Stock (164,835) — — 164,835 Disposed
April 2, 2024 BOLD Series B Convertible Preferred Stock Common Stock (227,920) — — 227,920 Disposed
April 2, 2024 BOLD Series A Convertible Preferred Stock Common Stock (454,212) — — 454,212 Disposed
April 2, 2024 BOLD Series A Convertible Preferred Stock Common Stock (586,080) — — 586,080 Disposed
April 2, 2024 BOLD Series A Convertible Preferred Stock Common Stock (424,908) — — 424,908 Disposed
March 27, 2024 BOLD Stock Option Common Stock (26,438) $16.00 March 26, 2034 26,438 Acquired
June 21, 2023 SRRK Stock Option (Right to Buy) Common Stock (36,000) $9.11 June 21, 2033 36,000 Acquired
June 6, 2023 BEAM Stock Option (Right to Buy) Common Stock (16,532) $34.33 June 6, 2033 16,532 Acquired
Sept. 1, 2022 BEAM Stock Option (Right to Buy) Common Stock (10,391) $55.58 Sept. 1, 2032 10,391 Acquired
May 26, 2022 SRRK Stock Option (Right to Buy) Common Stock (28,000) $4.75 May 26, 2032 28,000 Acquired
June 10, 2021 BEAM Stock Option (Right to Buy) Common Stock (6,877) $87.91 June 10, 2031 6,877 Acquired
May 27, 2021 SRRK Stock Option (Right to Buy) Common Stock (7,800) $26.78 May 27, 2031 7,800 Acquired
June 17, 2020 GOSS Stock Option (right to buy) Common Stock (23,500) $12.10 June 16, 2030 23,500 Acquired
June 16, 2020 SRRK Stock Option (right to buy) Common Stock (13,000) $17.65 June 16, 2030 13,000 Acquired
May 21, 2020 VIR Stock Option (Right to Buy) Common Stock (25,404) $37.06 May 20, 2030 25,404 Acquired
May 21, 2020 VIR Stock Option (Right to Buy) Common Stock (28,888) $37.06 May 21, 2030 28,888 Acquired
Feb. 10, 2020 BEAM Series B Preferred Stock Common Stock (33,184) — — 33,184 Disposed
Feb. 10, 2020 BEAM Series B Preferred Stock Common Stock (33,184) — — 33,184 Disposed
Feb. 10, 2020 BEAM Series A-2 Preferred Stock Common Stock (2,750,335) — — 2,750,335 Disposed
Feb. 10, 2020 BEAM Series A-2 Preferred Stock Common Stock (2,750,336) — — 2,750,336 Disposed
Feb. 10, 2020 BEAM Series A-1 Preferred Stock Common Stock (1,338,000) — — 1,338,000 Disposed
Feb. 10, 2020 BEAM Series A-1 Preferred Stock Common Stock (1,338,000) — — 1,338,000 Disposed
Oct. 16, 2019 VIR Series B Convertible Preferred Stock Common Stock (2,222,222) — — 2,222,222 Disposed
Oct. 16, 2019 VIR Series B Convertible Preferred Stock Common Stock (555,555) — — 555,555 Disposed
Oct. 16, 2019 VIR Series A-1 Convertible Preferred Stock Common Stock (13,333,332) — — 13,333,332 Disposed
Oct. 16, 2019 VIR Series A-1 Convertible Preferred Stock Common Stock (11,111,110) — — 11,111,110 Disposed
June 10, 2019 GOSS Stock Option (right to buy) Common Stock (23,500) $19.54 June 9, 2029 23,500 Acquired
May 21, 2019 SRRK Stock Option (Right to Buy) Common Stock (10,158) $21.21 May 21, 2029 10,158 Acquired
Feb. 12, 2019 GOSS Series B Preferred Stock Common Stock (345,419) — — 1,554,388 Disposed
Feb. 12, 2019 GOSS Series B Preferred Stock Common Stock (345,419) — — 1,554,388 Disposed
Feb. 12, 2019 GOSS Series A Preferred Stock Common Stock (3,682,539) — — 16,571,428 Disposed
Feb. 12, 2019 GOSS Series A Preferred Stock Common Stock (3,682,539) — — 16,571,429 Disposed
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 C Preferred Common Stock (293,813) — — 838,780 Disposed
May 29, 2018 SRRK Series B Preferred Common Stock (719,559) — — 2,054,197 Disposed
May 29, 2018 SRRK Series A-4 Preferred Common Stock (551,807) — — 1,575,299 Disposed
May 29, 2018 SRRK Series A-3 Preferred Common Stock (634,579) — — 1,811,595 Disposed
May 29, 2018 SRRK Series A-2 Preferred Common Stock (437,859) — — 1,249,999 Disposed

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

Initial ownership (Form 3) 37 holdings

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

Date Ticker Security Shares Ownership
March 27, 2024 BOLD Common Stock 27,349 Indirect
March 27, 2024 BOLD Common Stock 41,025 Indirect
March 27, 2024 BOLD Series A Convertible Preferred Stock→ Common Stock (424,908) 424,908 Indirect
March 27, 2024 BOLD Series A Convertible Preferred Stock→ Common Stock (586,080) 586,080 Indirect
March 27, 2024 BOLD Series A Convertible Preferred Stock→ Common Stock (454,212) 454,212 Indirect
March 27, 2024 BOLD Series B Convertible Preferred Stock→ Common Stock (227,920) 227,920 Indirect
March 27, 2024 BOLD Series C Convertible Preferred Stock→ Common Stock (164,835) 164,835 Indirect
March 27, 2024 BOLD Series C Convertible Preferred Stock→ Common Stock (201,465) 201,465 Indirect
March 27, 2024 BOLD Series C Convertible Preferred Stock→ Common Stock (366,301) 366,301 Indirect
Sept. 14, 2023 NMRA Common Stock 5,310,358 Indirect
Sept. 14, 2023 NMRA Common Stock 5,310,358 Indirect
Sept. 14, 2023 NMRA Series A-1 Preferred Stock→ Common Stock — Direct
Sept. 14, 2023 NMRA Series A-1 Preferred Stock→ Common Stock — Indirect
Sept. 14, 2023 NMRA Series A-1 Preferred Stock→ Common Stock — Indirect
Sept. 14, 2023 NMRA Series A-2 Preferred Stock→ Common Stock — Indirect
Sept. 14, 2023 NMRA Series A-2 Preferred Stock→ Common Stock — Indirect
Sept. 14, 2023 NMRA Series B Preferred Stock→ Common Stock — Indirect
Feb. 5, 2020 BEAM Series A-1 Preferred Stock→ Common Stock (1,338,000) 1,338,000 Indirect
Feb. 5, 2020 BEAM Series A-1 Preferred Stock→ Common Stock (1,338,000) 1,338,000 Indirect
Feb. 5, 2020 BEAM Series A-2 Preferred Stock→ Common Stock (2,750,336) 2,750,336 Indirect
Feb. 5, 2020 BEAM Series A-2 Preferred Stock→ Common Stock (2,750,335) 2,750,335 Indirect
Feb. 5, 2020 BEAM Series B Preferred Stock→ Common Stock (33,184) 33,184 Indirect
Feb. 5, 2020 BEAM Series B Preferred Stock→ Common Stock (33,184) 33,184 Indirect
Oct. 10, 2019 VIR Common Stock 444,444 Indirect
Oct. 10, 2019 VIR Series A-1 Convertible Preferred Stock→ Common Stock (11,111,110) 11,111,110 Indirect
Oct. 10, 2019 VIR Series A-1 Convertible Preferred Stock→ Common Stock (13,333,332) 13,333,332 Indirect
Oct. 10, 2019 VIR Series B Convertible Preferred Stock→ Common Stock (555,555) 555,555 Indirect
Oct. 10, 2019 VIR Series B Convertible Preferred Stock→ Common Stock (2,222,222) 2,222,222 Indirect
Feb. 7, 2019 GOSS Series A Preferred Stock→ Common Stock (3,682,539) 3,682,539 Indirect
Feb. 7, 2019 GOSS Series A Preferred Stock→ Common Stock (3,682,539) 3,682,539 Indirect
Feb. 7, 2019 GOSS Series B Preferred Stock→ Common Stock (345,419) 345,419 Indirect
Feb. 7, 2019 GOSS Series B Preferred Stock→ Common Stock (345,419) 345,419 Indirect
May 23, 2018 SRRK Series A-2 Preferred→ Common Stock (437,859) 437,859 Indirect
May 23, 2018 SRRK Series A-3 Preferred→ Common Stock (634,579) 634,579 Indirect
May 23, 2018 SRRK Series A-4 Preferred→ Common Stock (551,807) 551,807 Indirect
May 23, 2018 SRRK Series B Preferred→ Common Stock (719,559) 719,559 Indirect
May 23, 2018 SRRK Series C Preferred→ Common Stock (293,813) 293,813 Indirect